[Feature] Import/Export Settings

[BlazeFTL]

Is your feature request related to a problem? Please describe.

Whenever i change custom roms i have to allow su access manually everytime

If somehow kernelSu can remember the apps i allowed su would be great(doesn't have to be through import/export) if there are other good ideas for such task

Describe the solution you'd like.

Describe alternatives you've considered.

Additional context

[tiann]

#1705