Add a Code Shelter "note to maintainers"

[skorokithakis]

It would be good if you could add a "note to maintainers" detailing what sort of help you'd like from Code Shelter maintainers. This is a simple textfile with a few lines, here's an example.

This is pretty optional, as maintainers can also communicate on our chat (so feel free to close this ticket), but it might give potentially interested people some context.