Add new features and components to new GitLab resource adapter

Hossein Pursultanirequested to merge
429-new-features into master

This MR is one of the pieces for breaking down !521 (closed).

It contains minor changes to the new adapter features and components, including renaming a variable, or introducing new features and components, including toolbox CronJob and declaring Prometheus component.

Related to #429 (closed)

Edited by Hossein Pursultani

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