Implement deploy to another repository

[ktbarrett]

Rebase of #37. Closes #36. Closes #61. Closes #87.

I don't know typescript, so feel free to take it and run with it.

[ktbarrett]

@ktrz

[ktrz]

Thank you @ktbarrett for updating the previous PR. I'll have a look over the weekend

[ktrz]

Thank you for creating this PR. I've added a couple of comments to improve it and also asked a couple of questions.

Additionally, could you add some additional unit tests that would verify this new logic is working as intended?

[Trashtalk217]

Hello, I would very much like to use this feature, because I have a private branch that can't have Github pages. Is there a way I can help?

[ktbarrett]

@Trashtalk217 I'm sure the maintainers don't want a litter of PRs in this repo. You can make the fixes in your fork and can open a PR against this PR's branch in my fork, and it will update this PR. I'm not familiar with typescript and I'm a little busy to learn, so any help is appreciated!

[ktrz]

FYI: I'm picking it up to get it to the finish line

[ktrz]

I finally got the CI working and verified that using a separate repository works. I need to clean up the code and add additional workflows to push changes to a separate repo I've created to show as an example

[ktrz]

thank you @ktbarrett for helping with this feature!
released in v1.14.0

[ktbarrett]

@ktrz And thank you for pushing this through. Seemed like there was more problem than anticipated. We appreciate all your effort.