Add enum for library tab values

src/types/libraryTab.ts

@@ -0,0 +1,23 @@
+export enum LibraryTab {
+    Albums = 'albums',
+    AlbumArtists = 'albumartists',
+    Artists = 'artists',
+    Channels = 'channels',
+    Collections = 'collections',
+    Episodes = 'episodes',
+    Favorites = 'favorites',
+    Genres = 'genres',
+    Guide = 'guide',
+    Movies = 'movies',
+    Networks = 'networks',
+    Playlists = 'playlists',
+    Programs = 'programs',
+    Recordings = 'recordings',
+    Schedule = 'schedule',
+    Series = 'series',
+    Shows = 'shows',
+    Songs = 'songs',
+    Suggestions = 'suggestions',
+    Trailers = 'trailers',
+    Upcoming = 'upcoming'
+}