Changes to Analyze Blast Radius

added the new deleted enum value to the test_impact/files/items/status response property for the response status 200

added the optional property test_impact/deleted_files to the response with the 200 status

added the optional property test_impact/files/items/change_status to the response with the 200 status

added the optional property test_impact/files/items/head_present to the response with the 200 status

added the optional property direct_risks/items/churn_percentile to the response with the 200 status

added the optional property direct_risks/items/is_hotspot to the response with the 200 status