Fixed an issue where the custom protocol ('tidal://...') wasn't being recognized correctly. Now, the system checks for the presence of the custom protocol before the usual URL ('https://listen.tidal.com') is loaded.
Also implemented functionality to ensure that if only one instance is allowed at a time, the first instance changes its page accordingly.
Didn't add many types yet. Just used to test out typescript compiler, copying files and building.
Now that all that seems to go well I can start converting all files to .ts and then adding proper typing everywhere
