refactor cosmetics out of PlayerInfo (#1299)

## Description:

Remove Cosmetics from PlayerInfo. The game engine should have no
knowledge of cosmetics since they shouldn't affect game play at all.
Instead pass player cosmetics into the GameView.

## 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 understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

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

evan

src/client/graphics/layers/NameLayer.ts

@@ -198,8 +198,8 @@ export class NameLayer implements Layer {
       element.style.aspectRatio = "3/4";
     };
 
-    if (player.flag()) {
-      const flag = player.flag();
+    if (player.cosmetics.flag) {
+      const flag = player.cosmetics.flag;
       if (flag !== undefined && flag !== null && flag.startsWith("!")) {
         const flagWrapper = document.createElement("div");
         applyFlagStyles(flagWrapper);