Add map chopping block (#4143)

Resolves #4080

## Description:

Add Map Chopping Block
https://youtu.be/NpX73lHiKO8

Increased multiplier for 4 player team games and water nukes (plug in
center among other shortcuts). This map was made as a faster alternative
to Labyrinth. Map has been modified since last submission to be 'less
crazy'.

## 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

## Discord username:

PlaysBadly

src/server/MapPlaylist.ts

@@ -52,6 +52,7 @@ const FREQUENCY: Partial<Record<GameMapName, number>> = {
   Britannia: 5,
   Caribbean: 5,
   Caucasus: 5,
+  ChoppingBlock: 5,
   Conakry: 3,
   DanishStraits: 5,
   DeglaciatedAntarctica: 4,
@@ -146,6 +147,7 @@ const SPECIAL_TEAM_MAPS: ReadonlyMap<GameMapType, TeamCountConfig> = new Map([
   [GameMapType.TradersDream, 2],
   [GameMapType.Surrounded, 4],
   [GameMapType.GulfOfStLawrence, 3],
+  [GameMapType.ChoppingBlock, 4],
 ]);
 
 type ModifierKey =
@@ -190,6 +192,7 @@ const WATER_NUKES_BOOSTED_MAPS: ReadonlySet<GameMapType> = new Set([
   GameMapType.Baikal,
   GameMapType.Luna,
   GameMapType.ArchipelagoSea,
+  GameMapType.ChoppingBlock,
 ]);
 
 // Maps that are entirely land.