Changes to POST /v1/api/ai/runs

added the new review enum value to the mode response property for the response status 200

added the new optional request property branch

added the new review enum value to the request property mode

added the optional property followup to the response with the 200 status

added the optional property followup_pr_url to the response with the 200 status

added the new pending_approval enum value to the status response property for the response status 200

added the new optional request property approval

added the optional property approval to the response with the 200 status

added the optional property approved_at to the response with the 200 status

added the new babysitting enum value to the status response property for the response status 200