Add button for remove building (#1609)

## Description:

Added a red delete button with trash can icon to the right-click radial
menu that allows players to voluntarily delete their own units.

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

## Please put your Discord username so you can be contacted if a bug or
regression is found:

Kipstz

<img width="286" height="209" alt="image"
src="https://github.com/user-attachments/assets/85142be3-2aa5-4c84-ab30-0c68289c8f85"
/>

---------

Co-authored-by: Drills Kibo <59177241+drillskibo@users.noreply.github.com>

src/core/execution/ExecutionManager.ts

@@ -10,6 +10,7 @@ import { AttackExecution } from "./AttackExecution";
 import { BoatRetreatExecution } from "./BoatRetreatExecution";
 import { BotSpawner } from "./BotSpawner";
 import { ConstructionExecution } from "./ConstructionExecution";
+import { DeleteUnitExecution } from "./DeleteUnitExecution";
 import { DonateGoldExecution } from "./DonateGoldExecution";
 import { DonateTroopsExecution } from "./DonateTroopExecution";
 import { EmbargoExecution } from "./EmbargoExecution";
@@ -107,6 +108,8 @@ export class Executor {
 
       case "upgrade_structure":
         return new UpgradeStructureExecution(player, intent.unitId);
+      case "delete_unit":
+        return new DeleteUnitExecution(player, intent.unitId);
       case "quick_chat":
         return new QuickChatExecution(
           player,