Agree on project governance

[kaikreuzer]

@spearway, @iheart2code, before we start with any code commits on this repo, we should agree on the project governance, so that processes are clear to everybody and how we deal with contributions.
From my experience, it makes sense to have a strict handling right from the start, so that there are no problems at a later stage. As far as I have seen, you had already had a pretty professional way of handling contributions at SourceForge, so this should be continued.
My suggestions is to set up something similar to https://github.com/openhab/openhab2/blob/master/CONTRIBUTING.md.
Furthermore, I suggest that all changes by committers (you!) are also done through pull requests (unless really minor changes) - so that the 4-eye principle is in place all the time.

[iheart2code]

Sounds great! Outside of @ConnectSDK, this will be my first major open source contribution effort. I would most likely defer to those with more experience in this area. I am all for having a strict set of contribution guidelines.

[iheart2code]

Perhaps we can continue discussion at #7