add footer ad to homepage (#3385)

Ad a footer ad to the bottom of the homescreen


<img width="1568" height="984" alt="Screenshot 2026-03-08 at 2 28 05 PM"
src="https://github.com/user-attachments/assets/a8009e37-778e-47f0-add8-42885d4f0c11"
/>

<img width="716" height="834" alt="Screenshot 2026-03-08 at 2 28 56 PM"
src="https://github.com/user-attachments/assets/5e910d6a-5019-4e06-ad9a-8980470371ca"
/>

<img width="862" height="834" alt="Screenshot 2026-03-08 at 2 29 31 PM"
src="https://github.com/user-attachments/assets/85e87052-ff7a-4266-8a2d-432831e3c7d6"
/>




## 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:

evan

index.html

@@ -252,8 +252,11 @@
         ></ranked-modal>
       </main-layout>
 
-      <!-- Desktop Footer -->
-      <page-footer></page-footer>
+      <!-- Ad above footer -->
+      <div class="[.in-game_&]:hidden mt-auto flex flex-col shrink-0">
+        <home-footer-ad></home-footer-ad>
+        <page-footer></page-footer>
+      </div>
 
       <!-- Global Modals -->
       <territory-patterns-modal