Gitlab project for infos and management

[Flohack]

So as we did for the Pinephone already there is now a "community porting hub" project in Gitlab: https://gitlab.com/ubports/community-ports/raspberrypi - it will help tracking issues and visualizing progress and state.

I would ask someone from the community here to come up with an initial README.md that is roughly similar to https://gitlab.com/ubports/community-ports/pinephone and helps starters to get a bootable system.

You are also free and welcome to start writing issues into the tracker there!

BR Florian

[Mark]

@Flohack I have now updated the readme in a similar style to the Pinephone one and put in a merge request. Apologies if I've not followed the correct procedure - Gitlab is still new to me.