Code Improvement: Fix class Playable

[Dr-Blank]

Describe the Bug

Currently Playlist inherits Playable but cannot use any of it public methods since except play which itself calls client.playMedia

which expects a class of Media and has a separate case for Playlist.

also Playable implements attributes specific to only Playlist while each of its child classes implements atrribute media which is expected to be a part of Playable and is used in all of its methods but isn't present.

Code Snippets

python-plexapi/plexapi/base.py

Lines 714 to 716 in 47f11f0

	def _loadData(self, data):
	self.playlistItemID = utils.cast(int, data.attrib.get('playlistItemID')) # playlist
	self.playQueueItemID = utils.cast(int, data.attrib.get('playQueueItemID')) # playqueue

python-plexapi/plexapi/base.py

Lines 729 to 730 in 47f11f0

	if self.TYPE not in ('movie', 'episode', 'track', 'clip'):
	raise Unsupported(f'Fetching stream URL for {self.TYPE} is unsupported.')

Expected Behavior

transfer attributes to their own classes, and bring in common attributes into Playable from its children

Additional Context

No response

Operating System and Version

Windows 10 64-bit

Plex Media Server Version

1.32.7.7621

Python Version

3.11.0b1

PlexAPI Version

4.15.5