Enable the sort-keys eslint rule (#1746)

## Description:

Enable the `sort-keys` eslint rule.

Fixes #1629

## 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
- [ ] I have read and accepted the CLA agreement (only required once).

src/core/configuration/DefaultConfig.ts

@@ -367,6 +367,7 @@ export class DefaultConfig implements Config {
     return 1_000_000;
   }
 
+  /* eslint-disable sort-keys */
   unitInfo(type: UnitType): UnitInfo {
     switch (type) {
       case UnitType.TransportShip:
@@ -488,6 +489,7 @@ export class DefaultConfig implements Config {
         assertNever(type);
     }
   }
+  /* eslint-enable sort-keys */
 
   private costWrapper(
     type: UnitType,