Allow adding favorited gcode files to main screen, to be executed with a single button ala macro.

[GAZ082]

Requested feature:

I use some 3x3 patch for bed levelling from time to time and it's cumbersome to navigate from the main screen to the file. I created a macro with Gcode, but macros cannot be stopped, so any issue with the print would require me to do an emergency shutdown.

Would be nice to add an option to put some specific gcode files in the main screen for easy access, perhaps tying this with the #1257 issue.

Thanks!

Solves the following problem:

No response

Additional information:

No response

[meteyou]

Did you also test to start the gcode with a macro? https://www.klipper3d.org/G-Codes.html#sdcard_print_file