[CI/CD] - Add Lint support

[burntcarrot]

On running golangci-lint on my local machine, I was able to find 40+ linting issues.

10 of them were deadcode issues, so it can be ignored as they're a part of adding code for future releases.

The rest are ineffectual assignments and skipped error checks. We can log the error message for the skipped error checks; it would help us more in debugging.

I know this sounds like a minor issue, but with more code coming in the subsequent releases, addressing this earlier can help us save a lot of time maintaining good quality code.

Suggested Fix:
Add golangci-lint action as workflow to check linting issues. We can add a rule for excluding deadcode issues for now.

[burntcarrot]

If you want me to fix this, can I open a PR?

[alefesta]

yes please!!!!

[burntcarrot]

Related PR: #27.