Git Lab Integration

[devlinjunker]

Is your feature request related to a problem? Please describe:
Can we get all these actions and automation working on Git Lab also, so we aren't trapped with GitHub?

Also probably rename project to template.semver

Describe the solution:
Add .gitlab/ directory with actions that can be run on GitLab instead

• Release Cut
• Patch Cut
• Main on Merge
• Develop Verify
• Main Verify

We probably also should move all shell logic for these actions into script files that can be shared by both Github and GitLab

Links/Additional context:
https://about.gitlab.com/stages-devops-lifecycle/continuous-integration/

Testing:
Should be able to add repo on GitLab with these Template Project files and then run these same actions there