implemented some UI changes including adding a knob for pan and reverb, changing the UI of the key and bpm modification and changing the appearance of the detected key and bpm and removed some dev

Hide upload slots and AI continuation UI

Add IndexedDB preset caching with background prefetch

the ai generate button should be always present

deleted the server and client side decoding so the play back is ready instantly after loading the stems

added the looping function and changing the key and bpm of portion of the song

updated the MVP-Initial upload