Bomb Direction (#2435)

Resolves #2434 

## Description:

Allows bomb direction to be inverted by pressing a hotkey - currently
"U".

**Check the issue for screenshots / videos.**

## 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:

w.o.n

---------

Co-authored-by: Evan <evanpelle@gmail.com>
Co-authored-by: iamlewis <lewismmmm@gmail.com>

src/core/execution/NukeExecution.ts

@@ -30,6 +30,7 @@ export class NukeExecution implements Execution {
     private src?: TileRef | null,
     private speed: number = -1,
     private waitTicks = 0,
+    private rocketDirectionUp: boolean = true,
   ) {}
 
   init(mg: Game, ticks: number): void {
@@ -137,6 +138,7 @@ export class NukeExecution implements Execution {
         this.dst,
         this.speed,
         this.nukeType !== UnitType.MIRVWarhead,
+        this.rocketDirectionUp,
       );
       this.nuke = this.player.buildUnit(this.nukeType, spawn, {
         targetTile: this.dst,