Add Montreal (#2081)

## Description:
This PR adds the Montreal map that was used in OFM with some revisions,
including adding some river and changing the overall topography.

Describe the PR.

## 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:

DISCORD_USERNAME
Nikola123

src/core/configuration/DefaultConfig.ts

@@ -65,6 +65,7 @@ const numPlayersConfig = {
   [GameMapType.Italia]: [50, 30, 20],
   [GameMapType.Mars]: [70, 40, 30],
   [GameMapType.Mena]: [70, 50, 40],
+  [GameMapType.Montreal]: [60, 40, 30],
   [GameMapType.NorthAmerica]: [70, 40, 30],
   [GameMapType.Oceania]: [10, 10, 10],
   [GameMapType.Pangaea]: [20, 15, 10],