Add % done on loading screen

[mamamia5x]

When loading, it'll say Loading ____ (__% done).

[steveoo-tech]

I would love this opportunity! If you assign me I can try to make my first contribution :)

[mamamia5x]

All yours @steveoo-tech ;)

[OpenSourceLasagna]

Hey this issues seems to be still relevant and i would really like to contribute if this project still exists.