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

* Organized media menu code

* More consolidation

modules/menus/media/components/title/author/index.ts

@@ -0,0 +1,36 @@
+const media = await Service.import('mpris');
+import { BoxWidget } from 'lib/types/widget';
+import { getPlayerInfo } from '../../helpers';
+
+export const songAuthor = (): BoxWidget => {
+    return Widget.Box({
+        class_name: 'media-indicator-current-song-author',
+        hpack: 'center',
+        children: [
+            Widget.Label({
+                truncate: 'end',
+                wrap: true,
+                max_width_chars: 35,
+                class_name: 'media-indicator-current-song-author-label',
+                setup: (self) => {
+                    self.hook(media, () => {
+                        const curPlayer = getPlayerInfo();
+
+                        const makeArtistList = (trackArtists: string[]): string => {
+                            if (trackArtists.length === 1 && !trackArtists[0].length) {
+                                return '-----';
+                            }
+
+                            return trackArtists.join(', ');
+                        };
+
+                        return (self.label =
+                            curPlayer !== undefined && curPlayer['track_artists'].length
+                                ? makeArtistList(curPlayer['track_artists'])
+                                : '-----');
+                    });
+                },
+            }),
+        ],
+    });
+};