Is there currently any way to implement integration with Patreon?

I want to give people access to my GitLab-ce instance if they donate to my Patreon, but I would like to know if there is any way to integrate people who are my patrons and allow them to log into my GitLab-ce instance from their Patreon accounts?

More what I am looking for if there is not an already made tool, is there a way I could make a plugin for GitLab omnibus? I haven’t found much on plugins existing, in fact really nothing at all, not sure if I am just looking wrongly.

Also a follow up question if those two questions are no, what would be the best way to add people from Patreon to GitLab?