Add Azure DevOps Server support

[vinokurig]

What does this PR do?

• Add Azure DevOps Server support to use with PAT ONLY, as the azure Devops Api does not support oauth2, see: https://github.com/eclipse-che/che/issues/23306#issuecomment-2589501831
• Change the gitconfig storage configmap to a secret because we are going to mount sensitive data to the devworkspace system scope gitconfig, see: https://github.com/eclipse-che/che-dashboard/pull/1313

Depends on https://github.com/eclipse-che/che-dashboard/pull/1313

Screenshot/screencast of this PR

What issues does this PR fix or reference?

fixes https://github.com/eclipse-che/che/issues/23306

How to test this PR?

1. Deploy che with the pull request image: quay.io/eclipse/che-server:pr-754 and quay.io/eclipse/che-dashboard:pr-1313
2. In the Dev azure Server instance create a personal access token with full access.
3. Create a personal access token, use the Organization input to enter the Collection name.
4. Start a workspace from an azure devops server repository with a devfile.

See: workspace starts with the devfile resolve.

PR Checklist

As the author of this Pull Request I made sure that:

• [ ] The Eclipse Contributor Agreement is valid
• [ ] Code produced is complete
• [ ] Code builds without errors
• [ ] Tests are covering the bugfix
• [ ] The repository devfile is up to date and works
• [ ] Sections What issues does this PR fix or reference and How to test this PR completed
• [ ] Relevant user documentation updated
• [ ] Relevant contributing documentation updated
• [ ] CI/CD changes implemented, documented and communicated

Release Notes

Reviewers

Reviewers, please comment how you tested the PR when approving it.