Spotify Controller

Updated to work with new 1.21.7 version - probably will work with 1.21.6 and future 1.21.8

On intel integrated graphics - setup screen will probably be very broken. Button is visible, so just click on the button. Further setup process is not broken. I couldn't test on other graphics card because I don't simply own them. I will re-release the update on 1.21.8 when problems related to intel integrated graphics are fixed and the broken setup screen persists.