Use a regular expression string to filter Github Repositories

[josealdaco]

With the newly added feature #397 I've been able to target several Github repositories by name, however in my case I want to match all repositories that begin with a prefix. When I use repo- with --repo-search for example I also get repository names that match with repo instead of matching repositories that only begin with repo-.

I think introducing a --repo-include and --repo-exclude flag would be beneficial by filtering out repositories with a regular expression, would this be a good feature to add to multi-gitter?

[josealdaco]

PS: forked the repository and implemented the feature locally, new to Go and thought tackling this would be a great start 😁
feature