reorg, remove old music slice files

app/models/library.ts

@@ -0,0 +1,56 @@
+export interface Artist {
+  itemType: 'artist'
+  id: string
+  name: string
+  starred?: Date
+  coverArt?: string
+}
+
+export interface ArtistInfo {
+  id: string
+  largeImageUrl?: string
+}
+
+export interface Album {
+  itemType: 'album'
+  id: string
+  name: string
+  artist?: string
+  artistId?: string
+  starred?: Date
+  coverArt?: string
+  year?: number
+}
+
+export interface Playlist {
+  itemType: 'playlist'
+  id: string
+  name: string
+  comment?: string
+  coverArt?: string
+}
+
+export interface Song {
+  itemType: 'song'
+  id: string
+  album?: string
+  albumId?: string
+  artist?: string
+  artistId?: string
+  title: string
+  track?: number
+  discNumber?: number
+  duration?: number
+  starred?: Date
+  coverArt?: string
+}
+
+export interface SearchResults {
+  artists: string[]
+  albums: string[]
+  songs: string[]
+}
+
+export type StarrableItemType = 'album' | 'song' | 'artist'
+
+export type ListableItem = Album | Song | Artist | Playlist