Add CI Docs

[Rosuavio]

Fixes #2

What changes does this PR introduce?

Add some overview style docs of our CI pipeline and its various components.

PR Checklist

Please check if your PR fulfills the following requirements:

• [ ] Opened a relevant issue and provided the reference # above
• [ ] Correctly picked the forked new branch to base the change off (main)
• [ ] Ran against a spell and grammar checker

Other information

[XAML-Knight]

This PR moved to #43, upon @RosarioPulella's departure