Support splat (wildcard) redirects

In #24 (closed), a simple redirect mechanism was implemented https://docs.gitlab.com/ee/user/project/pages/redirects.html.

It would be great if we also supported splat (wildcard) redirect support. According to the Netlify docs:

/news/*  /blog/:splat

This would redirect paths like /news/2004/01/10/my-story to /blog/2004/01/10/my-story.

It would mean a lot for the docs site, since we want to move away from the /ee prefix and use something like /gitlab.

/ee/*  /gitlab/:splat

Release Notes

Details to be added