Clean up media module logic and code. (#380)

* Organized media menu code

* More consolidation

modules/menus/media/components/controls/loop/helpers.ts

@@ -0,0 +1,11 @@
+import { LoopStatus } from 'lib/types/mpris';
+import { MprisPlayer } from 'types/service/mpris';
+
+export const isValidLoopStatus = (status: string): status is LoopStatus =>
+    ['none', 'track', 'playlist'].includes(status);
+
+export const isLoopActive = (player: MprisPlayer): string => {
+    return player['loop_status'] !== null && ['track', 'playlist'].includes(player['loop_status'].toLowerCase())
+        ? 'active'
+        : '';
+};