Implement configuration to ignore archived GitLab repositories

### What feature do you want to see added?

In GitLab, you can [archive a repository](https://docs.gitlab.com/ee/user/project/working_with_projects.html).

Per the docs, they are:
* Labeled with an archived badge on the project page.
* Listed on the group page in the Inactive tab.
* Hidden from project lists in Your Work and Explore.
* Read-only.

In `GitLab Branch Source` `v1.5.4`, when clicking `Scan GitLab Project Now`, the plugin loads `Jenkinsfile`-based pipelines from archived repositories.

I think it is a fair _default_ assumption that users would not want to see archived GitLab repositories in Jenkins.

I would love to have an option to ignore archived repositories during that scan, even if they contain `Jenkinsfile`s.

### Upstream changes

_No response_

### Are you interested in contributing this feature?

_No response_