Enable the sort-imports eslint rule (#1849)

## Description:

Enable the `sort-imports` eslint rule.

Fixes #1784

## 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

src/core/execution/ShellExecution.ts

@@ -1,7 +1,7 @@
 import { Execution, Game, Player, Unit, UnitType } from "../game/Game";
-import { TileRef } from "../game/GameMap";
 import { AirPathFinder } from "../pathfinding/PathFinding";
 import { PseudoRandom } from "../PseudoRandom";
+import { TileRef } from "../game/GameMap";
 
 export class ShellExecution implements Execution {
   private active = true;