Button for "Create Pull Request"

[ttasovac]

As you are working on extending the features of the Git Staging plugin, I'd like to chip in a suggestion for having a button for "Creating Pull Requests".

I understand it would be too much to implement submitting pull requests from within oXygen, but it would already be a very helpful addition to our workflow if our encoders could click on a button and be taken directly to a new pull request on github.com, where they could submit it.

This is also how GitHub Desktop does it (Branch > Create Pull Request).