Implement GitHub PR Issue Checker Workflow

[smog-root]

Closes #578

Usage:

1. When a pull request is created or edited, the workflow automatically triggers.

2. The workflow checks for:

• A non-empty PR description.
• A valid issue reference format (Fixes , Close, Closes, Closed , Fix , Fixed , Resolve , Resolves #Issue_number).

3. If either check fails, the PR will be marked as failing, and the author will receive clear error messages in the PR comments.
4. If all checks pass, a confirmation message will indicate that the PR is valid.

Note: Kindly add all the labels added to the issue, to this PR!

@tushargupta1504

[thakuratul2]

@smog-root this is not the proper github flows because you implement the python code why please explain me

[smog-root]

@smog-root this is not the proper github flows because you implement the python code why please explain me

the github flow can be written in bash (or) python. bash workflows are (yml) and python are (yaml)!

i choose to write in python! @thakuratul2

[smog-root]

@tushargupta1504 it's level2 in the issue! don't decrease the level!! add level2