Add flags for the Arctic map (#3610)

## Description:

Adds flags of all canadian provinces and territories (except quebec
which was already in), and the flags of the Soviet Republics, Tannu tuva
and the Far Eastern Republic. These are flags for nations of the Arctic
map, a different PR will be made so that the nations in the map use
these flags if added. Also makes flags usable.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

tri.star1011

CREDITS.md

@@ -88,3 +88,8 @@ Noah Petro (NASA/GSFC) ORCID logo.
 Stats icon by [Meko](https://thenounproject.com/mekoda/) – https://thenounproject.com/icon/stats-4942475/
 Pay Per Click icon by [Fauzan Adiima](https://thenounproject.com/creator/fauzan94/) – https://thenounproject.com/icon/pay-per-click-2586454/
 Medal icon by [Snow](https://thenounproject.com/snowdoll/) – https://thenounproject.com/icon/medal-4567887/
+
+### Flags
+
+[Wikimedia Commons](https://commons.wikimedia.org/wiki/Flag)
+Licensed under [CC BY-SA 3.0 DE](https://creativecommons.org/licenses/by-sa/3.0/de/deed.en)

resources/countries.json

@@ -63,6 +63,11 @@
     "continent": "North America",
     "name": "Alaska"
   },
+  {
+    "code": "alberta",
+    "continent": "North America",
+    "name": "Alberta"
+  },
   {
     "code": "dz",
     "continent": "Africa",
@@ -88,6 +93,11 @@
     "continent": "Asia",
     "name": "Armenia"
   },
+  {
+    "code": "Armenian SSR",
+    "continent": "Asia",
+    "name": "Armenian SSR"
+  },
   {
     "code": "Anarchist flag",
     "name": "Anarchist Flag"
@@ -191,6 +201,11 @@
     "continent": "Asia",
     "name": "Azerbaijan"
   },
+  {
+    "code": "Azerbaijan SSR",
+    "continent": "Asia",
+    "name": "Azerbaijan SSR"
+  },
   {
     "code": "Aztec Empire",
     "continent": "North America",
@@ -294,6 +309,11 @@
     "continent": "South America",
     "name": "Brazil"
   },
+  {
+    "code": "britishcolumbia",
+    "continent": "North America",
+    "name": "British Columbia"
+  },
   {
     "code": "io",
     "continent": "Asia",
@@ -339,6 +359,11 @@
     "continent": "Africa",
     "name": "Burundi"
   },
+  {
+    "code": "Byelorussian SSR",
+    "continent": "Europe",
+    "name": "Byelorussian SSR"
+  },
   {
     "code": "Byzantine Empire",
     "continent": "Europe",
@@ -418,6 +443,11 @@
     "continent": "Africa",
     "name": "Chad"
   },
+  {
+    "code": "Chaldea",
+    "continent": "Asia",
+    "name": "Chaldea"
+  },
   {
     "code": "cl",
     "continent": "South America",
@@ -676,6 +706,11 @@
     "continent": "Europe",
     "name": "Estonia"
   },
+  {
+    "code": "Estonian SSR",
+    "continent": "Europe",
+    "name": "Estonian SSR"
+  },
   {
     "code": "sz",
     "continent": "Africa",
@@ -696,6 +731,11 @@
     "continent": "South America",
     "name": "Falkland Islands"
   },
+  {
+    "code": "fareasternrepublic",
+    "continent": "Asia",
+    "name": "Far Eastern Republic"
+  },
   {
     "code": "fo",
     "continent": "Europe",
@@ -805,6 +845,11 @@
     "continent": "North America",
     "name": "Georgia (US State)"
   },
+  {
+    "code": "Georgian SSR",
+    "continent": "Asia",
+    "name": "Georgian SSR"
+  },
   {
     "code": "German Empire",
     "continent": "Europe",
@@ -1035,6 +1080,16 @@
     "continent": "North America",
     "name": "Kansas"
   },
+  {
+    "code": "Karelo-Finnish SSR",
+    "continent": "Europe",
+    "name": "Karelo-Finnish SSR"
+  },
+  {
+    "code": "Kazakh SSR",
+    "continent": "Asia",
+    "name": "Kazakh SSR"
+  },
   {
     "code": "kz",
     "continent": "Asia",
@@ -1085,6 +1140,11 @@
     "continent": "Asia",
     "name": "Kingdom of Judah"
   },
+  {
+    "code": "Kirghiz SSR",
+    "continent": "Asia",
+    "name": "Kirghiz SSR"
+  },
   {
     "code": "ki",
     "continent": "Oceania",
@@ -1134,6 +1194,11 @@
     "continent": "Europe",
     "name": "Latvia"
   },
+  {
+    "code": "Latvian SSR",
+    "continent": "Europe",
+    "name": "Latvian SSR"
+  },
   {
     "code": "League of Nations",
     "name": "League of Nations"
@@ -1191,6 +1256,11 @@
     "continent": "Europe",
     "name": "Lithuania"
   },
+  {
+    "code": "Lithuanian SSR",
+    "continent": "Europe",
+    "name": "Lithuanian SSR"
+  },
   {
     "code": "Louisiana",
     "continent": "North America",
@@ -1216,6 +1286,11 @@
     "continent": "Europe",
     "name": "Macedonia"
   },
+  {
+    "code": "manitoba",
+    "continent": "North America",
+    "name": "Manitoba"
+  },
   {
     "code": "mo",
     "continent": "Asia",
@@ -1336,6 +1411,11 @@
     "continent": "North America",
     "name": "Missouri"
   },
+  {
+    "code": "Moldavian SSR",
+    "continent": "Europe",
+    "name": "Moldavian SSR"
+  },
   {
     "code": "md",
     "continent": "Europe",
@@ -1429,11 +1509,21 @@
     "continent": "North America",
     "name": "Nevada"
   },
+  {
+    "code": "newbrunswick",
+    "continent": "North America",
+    "name": "New Brunswick"
+  },
   {
     "code": "nc",
     "continent": "Oceania",
     "name": "New Caledonia"
   },
+  {
+    "code": "newfoundlandandlabrador",
+    "continent": "North America",
+    "name": "Newfoundland and Labrador"
+  },
   {
     "code": "New_Hampshire",
     "continent": "North America",
@@ -1534,11 +1624,26 @@
     "continent": "Europe",
     "name": "Northumbria"
   },
+  {
+    "code": "northwestterritories",
+    "continent": "North America",
+    "name": "Northwest Territories"
+  },
   {
     "code": "no",
     "continent": "Europe",
     "name": "Norway"
   },
+  {
+    "code": "novascotia",
+    "continent": "North America",
+    "name": "Nova Scotia"
+  },
+  {
+    "code": "nunavut",
+    "continent": "North America",
+    "name": "Nunavut"
+  },
   {
     "code": "1_Occitania",
     "continent": "Europe",
@@ -1559,6 +1664,11 @@
     "continent": "Asia",
     "name": "Oman"
   },
+  {
+    "code": "ontario",
+    "continent": "North America",
+    "name": "Ontario"
+  },
   {
     "code": "Oregon",
     "continent": "North America",
@@ -1663,6 +1773,11 @@
     "continent": "Europe",
     "name": "Powys"
   },
+  {
+    "code": "princeedwardisland",
+    "continent": "North America",
+    "name": "Prince Edward Island"
+  },
   {
     "code": "provence",
     "continent": "Europe",
@@ -1757,6 +1872,11 @@
     "continent": "Europe",
     "name": "Russia"
   },
+  {
+    "code": "Russian SSR",
+    "continent": "Europe",
+    "name": "Russian SSR"
+  },
   {
     "code": "rw",
     "continent": "Africa",
@@ -1840,6 +1960,11 @@
     "code": "sardines",
     "name": "Sardines"
   },
+  {
+    "code": "saskatchewan",
+    "continent": "North America",
+    "name": "Saskatchewan"
+  },
   {
     "code": "Sassanid Empire",
     "continent": "Asia",
@@ -2064,6 +2189,11 @@
     "continent": "Asia",
     "name": "Tajikistan"
   },
+  {
+    "code": "tannutuva",
+    "continent": "Asia",
+    "name": "Tannu Tuva"
+  },
   {
     "code": "tz",
     "continent": "Africa",
@@ -2134,6 +2264,11 @@
     "continent": "Asia",
     "name": "Türkiye"
   },
+  {
+    "code": "Turkmen SSR",
+    "continent": "Asia",
+    "name": "Turkmen SSR"
+  },
   {
     "code": "tm",
     "continent": "Asia",
@@ -2169,6 +2304,11 @@
     "continent": "Europe",
     "name": "Ukraine"
   },
+  {
+    "code": "Ukrainian SSR",
+    "continent": "Europe",
+    "name": "Ukrainian SSR"
+  },
   {
     "code": "1_Ulaid",
     "continent": "Europe",
@@ -2218,6 +2358,11 @@
     "continent": "North America",
     "name": "Utah"
   },
+  {
+    "code": "Uzbek SSR",
+    "continent": "Asia",
+    "name": "Uzbek SSR"
+  },
   {
     "code": "uz",
     "continent": "Asia",
@@ -2337,6 +2482,11 @@
     "continent": "Europe",
     "name": "Yugoslavia"
   },
+  {
+    "code": "yukon",
+    "continent": "North America",
+    "name": "Yukon"
+  },
   {
     "code": "Zaire",
     "continent": "Africa",