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/configuration/Config.ts

@@ -127,6 +127,7 @@ export interface Config {
   emojiMessageCooldown(): Tick;
   emojiMessageDuration(): Tick;
   donateCooldown(): Tick;
+  deleteUnitCooldown(): Tick;
   defaultDonationAmount(sender: Player): number;
   unitInfo(type: UnitType): UnitInfo;
   tradeShipGold(dist: number, numPorts: number): Gold;

src/core/configuration/DefaultConfig.ts

@@ -556,6 +556,9 @@ export class DefaultConfig implements Config {
   donateCooldown(): Tick {
     return 10 * 10;
   }
+  deleteUnitCooldown(): Tick {
+    return 5 * 10;
+  }
   emojiMessageDuration(): Tick {
     return 5 * 10;
   }