feat: basic initial types

enums.d.ts

@@ -0,0 +1,36 @@
+declare namespace MusicKit {
+    /**
+     * The bitrate to choose for playback. HIGH is 256kbps, STANDARD is 64kbps
+     */
+    enum PlaybackBitrate {
+        'HIGH',
+        'STANDARD'
+    }
+
+    /**
+     * State of the player. See https://js-cdn.music.apple.com/musickit/v3/docs/iframe.html?id=reference-javascript-musickit--page&viewMode=story&args=#playbackstates
+     */
+    enum PlaybackStates {
+        'none',
+        'loading',
+        'playing',
+        'paused',
+        'stopped',
+        'ended',
+        'seeking',
+        'waiting',
+        'stalled',
+        'completed'
+    }
+
+    enum PlayerRepeatMode {
+        'all',
+        'none',
+        'one'
+    }
+
+    enum PlayerShuffleMode {
+        'on',
+        'off'
+    }
+}