Support Trimui Smart Pro stock OS

[malkavi]

Is your feature request related to a problem? Please describe.
Support stock OS for TSP

Describe the solution you'd like
Add files for TSP support.

I have a branch prepared there:
https://github.com/malkavi/grout/commits/feature/add-trimuistock-platforms

I tested the download of ROMs. Still need time to test save sync and art.

[pawndev]

This could be the good continuation of my old attempt at it #66
It was originally for crossmix, but for stock and tweak later for crossmix seems a good plan