[PHP-113623] Add Smoke Testing for src/vscode-docker. (#305)

* Dev Container with VS code

* Add php-ml-ops-infra as CODEOWNERS for vscode-docker cloud app

* smoke tests for VS Code Docker Cloud App

* smoke tests for VS Code Docker Cloud App

Author: acefsan

.github/workflows/test-pr.yaml

@@ -43,6 +43,9 @@ jobs:
               user: abc
               workbench_tools: true
               postgres_client: true
+            vscode-docker:
+              user: abc
+              workbench_tools: true
             workbench-jupyter:
               template: custom-workbench-jupyter-template
               user: jupyter