Add more test cases & make it pre-push(in github actions) instead of pre-commit

[anand-infocusp]

• Add test cases involving end-to-end pipeline run.
• Currently test cases are run as pre-commit configuration. Need to make it as a pre-push or in github actions.
• yapf & i-sort should also be added in github actions.

[mayur-iipl]

Test cases, YAPF, Isort added in GitHub actions. #10