fix(composition-display): Add compositionDisplay SettingsGroup (@Leonabcd123) (monkeytypegame#7211)

### Description

Add compositionDisplay SettingsGroup to allow users to select the value
they want for the compositionDisplay setting.

Author: Leonabcd123

frontend/src/ts/config.ts

@@ -629,6 +629,13 @@ export function setIndicateTypos(
   return genericSet("indicateTypos", value, nosave);
 }
 
+export function setCompositionDisplay(
+  value: ConfigSchemas.CompositionDisplay,
+  nosave?: boolean,
+): boolean {
+  return genericSet("compositionDisplay", value, nosave);
+}
+
 export function setAutoSwitchTheme(
   boolean: boolean,
   nosave?: boolean,

frontend/src/ts/pages/settings.ts

@@ -204,6 +204,11 @@ async function initGroups(): Promise<void> {
     UpdateConfig.setIndicateTypos,
     "button",
   );
+  groups["compositionDisplay"] = new SettingsGroup(
+    "compositionDisplay",
+    UpdateConfig.setCompositionDisplay,
+    "button",
+  );
   groups["hideExtraLetters"] = new SettingsGroup(
     "hideExtraLetters",
     UpdateConfig.setHideExtraLetters,