feat: Migrate RunJob from TF-based to Direct (beta) #5073
Description
Checklist
- I did not find a related open enhancement request.
- I understand that enhancement requests filed in the GitHub repository are by default low priority.
- If this request is time-sensitive, I have submitted a corresponding issue with GCP support.
Describe the feature or resource
Migrate the RunJob from Terraform-based to the direct approach. Keep api unchanged.
Additional information
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Importance
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