Support for sideloading vb_meta.img and stuff.

[tsterbak]

Should help to enable devices like #32.

[tsterbak]

For example this device needs it: https://wiki.lineageos.org/devices/lemonadep/

[tsterbak]

@MagicLike @SirRGB @freechelmi
Where could additional file selection buttons and displays fit in? 🤔

[MagicLike]

@MagicLike @SirRGB @freechelmi Where could additional file selection buttons and displays fit in? thinking

Maybe at the OS and TWRP file selection?

[MagicLike]

This could also get fixed by #188 (?)

[tsterbak]

Yes, I think so.

[tsterbak]

Resolved with #246