Remove input track descriptors, add async getters on tracks for everything, deprecate old sync getters

dev/demux.html

@@ -28,13 +28,19 @@
 		return;
 		*/
 
-		const manifest = new Mediabunny.Input({
-			entryPath: 'https://test-streams.mux.dev/x36xhzz/x36xhzz.m3u8',
-			source: ({ path }) => new Mediabunny.UrlSource(path),
-			formats: Mediabunny.ALL_FORMATS,
-		});
+		const manifest = Mediabunny.createInputFrom(
+			'https://test-streams.mux.dev/x36xhzz/x36xhzz.m3u8',
+			Mediabunny.ALL_FORMATS,
+		);
 		
-		const audioTrack = await manifest.getPrimaryAudioTrack();
+		const [track] = await manifest.getTracks();
+		console.log(track);
+		
+		window.kekw = () => {
+			console.log(track.getFirstTimestamp())
+		};
+
+		return;
 		const ugh = new Mediabunny.EncodedPacketSink(audioTrack);
 
 		for await (const packet of ugh.packets()) {