Add a troubleshooting section to the README

[webketje]

• Update de bug reporting template to mention looking at the README troubleshooting guide
• This should add troubleshooting guides for:
  • _tkinter.TclError: no display name and no $DISPLAY environment variable cf Not working under Arch Linux #3, program cannot read $DISPLAY #21, Stopped working #25
  • Linux Kernel 6.0 support
  • Stellaris/ Polaris support