Implement PR Issue Checker Workflow

[smog-root]

Description: We need to create a GitHub Actions workflow that automates the validation of pull requests (PRs). This workflow will ensure that all PRs meet the following criteria before being merged:

PR Description Check: Every PR must have a description. If the description is missing, the PR should fail the check.

Issue Reference Check: The PR description must include an issue reference in the format Fixes #. If the PR is not addressing an existing issue, it should mention Fixes #NEW as a placeholder.

Acceptance Criteria:

• A GitHub Action workflow is triggered on PR events (opened, edited).

The workflow checks the PR body for:

• A non-empty description.
• The presence of Fixes # or Fixes #NEW.

If the criteria are not met:

• The workflow should fail and return clear error messages.

If the checks pass:

• A confirmation message is outputted.

Expected Output:

• Error message if the PR description is missing.
• Error message if the issue reference is missing or incorrectly formatted.
• Success message when all checks are satisfied.

Additional Notes:

• This issue may serve as a foundation for more advanced PR validation (e.g., commit message format, label enforcement).
• We can later extend this to check for specific branch naming conventions or enforce the addition of specific labels.

Note: i'm expecting a gssoc-ext with level3 (or) level2 and a hacktoberfest-accepted label!

@ajaynegi45

[github-actions[bot]]

👋 Thank you @smog-root for raising an issue! We appreciate your effort in helping us improve. Our team will review it shortly. Stay tuned!

[ajaynegi45]

Hi @smog-root,

Thank you for expressing your interest in working on this issue. I'm delighted to inform you that I have assigned this issue to you. Your willingness to contribute to our project is much appreciated.

Before making any contributions, please read the Readme.md file carefully to better understand the project's goals and purpose. This will give you clarity on our mission. Also, make sure to review the Contributing.md file, which contains important guidelines to make the contribution process smoother, especially for newcomers.

Feel free to start working, and if you have any questions or need assistance during the process, please don't hesitate to reach out.