No Error handling on any scripts

[Tuhin-thinks]

There is no error handling done on any of the following scripts:

• check_mr_ok.py
• check_approves.py
• find_resolved_issues.py

[Nikhil216]

I don't expect this project to scale to hundreds of MRs. So any time poured into error handling would yield diminished results. Let's wait until the errors prove to be a pain point.

[Tuhin-thinks]

@Nikhil216 right indeed, the structure needs to be updated first, then I can focus on writing error handling depending on known errors.