[Feature]: Support parallel execution of tests

[Grant-Archibald-MS]

Is your feature request related to a problem? Please describe.

When have many tests if executing the tests sequentially it could take time to execute

Describe the solution you'd like

Provide the ability to execute test engine suite and test cases in parallel

Describe alternatives you've considered

No response

Additional context?

No response

[Grant-Archibald-MS]

Considering

1. Differences between unit and integration tests.
2. Test cases which are unit tests that can be run in parallel