* Add button to execute tests
* Create API to execute tests
* Add modal for Test response
* Make API call to execute tests and show response in modal
* Clean up
* Update docs - feature execute tests for a release
* Add arg '--logs' to 'helm test' cmd
* Wait for API to complete before sending back response to frontend
* Add loading spinner until reponse for 'helm test' is returned from backend by API
* Clean-up
Co-authored-by: Harshit Mehta <harshitm@nvidia.com>