UI Updates (#3616)

## Description:

Updates Favicon and other key UI elements



## 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:

iamlewis

---------

Co-authored-by: iamharry <harrylong0905@gmail.com>
Co-authored-by: FloPinguin <25036848+FloPinguin@users.noreply.github.com>
Co-authored-by: evanpelle <evanpelle@gmail.com>

src/client/HostLobbyModal.ts

@@ -338,7 +338,7 @@ export class HostLobbyModal extends BaseModal {
         <!-- Player List / footer -->
         <div class="p-6 pt-4 border-t border-white/10 bg-black/20 shrink-0">
           <button
-            class="w-full py-4 text-sm font-bold text-white uppercase tracking-widest bg-sky-600 hover:bg-sky-500 disabled:opacity-50 disabled:cursor-not-allowed rounded-xl transition-all shadow-lg shadow-sky-900/20 hover:shadow-sky-900/40 hover:-translate-y-0.5 active:translate-y-0 disabled:transform-none"
+            class="w-full py-4 text-sm font-bold text-white uppercase tracking-widest bg-[#0073b7] hover:bg-sky-500 disabled:opacity-50 disabled:cursor-not-allowed rounded-xl transition-all shadow-lg shadow-sky-900/20 hover:shadow-sky-900/40 hover:-translate-y-0.5 active:translate-y-0 disabled:transform-none"
             @click=${this.startGame}
             ?disabled=${this.clients.length < 2}
           >