[Internal] [Test] Add Separate CI For Dev Branch

[ankushkgupta2]

Please Provide a Description of the Testing Request.

Place an ❌ in a Box that Best Matches the Test Request's Importance:

• 1 - Urgent (absolutely integral and core-functionlaity of the codebase is completely compromised without this test)
• [] 2 - Most Important (codebase can be used for some core-functions but the test needs to be executed for some)
• [] 3-4 - Moderate (codebase can be used for all core-functions but the test needs to be exexcuted for some other ones)
• [] 5 - Least important (would like to see but there are no stringent expectations nor urgency for current/future use-cases) 

Any Additional Context or Information? Has There Been Any Progress Made So Far Towards this Request? Any Helpful Resources to Reference? Screenshots or Links?
N/A

[ankushkgupta2]

Refactoring to the python scripts containing tests and the workflow needs to be changed.

Production (master) = Uses test_main.py to run general end-to-end tests in Nextflow + checking outputs with a full-run (to test across all features associated with an enhancement). These tests are called through a separate workflow .yml file with the merge condition into main (therefore staging into main or hotfixes).
Staging (dev) = Uses a separate python script for calling unit tests, by importing enhancement / bug fix specific tests and running it. These tests are called through a separate workflow.yml file with a merge condition into dev (any time a PR is opened into the dev branch).