Add ability to select a Cluster management project

Adds the ability to select a Cluster management project

#32810 (closed)

Screenshots

Testing

Enable the cluster_management_project feature flag.

Execute the following commands in the project root

1. bundle exec rails console
2. Feature.enable(:cluster_management_project)
3. Navigate to Operations > Kubernetes > [Cluster] > Advanced settings

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Style guides

TODO

• Refine Instance level cluster dropdown search criteria.
• Refine Group level cluster dropdown search criteria.
• Refine Project level cluster dropdown search criteria.