Validating PR Issue Checker Workflow

[siri-chandana-macha]

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.

Note : I'm expecting a gssoc-ext with level2 and hacktoberfest, hacktoberfest-accepted and level! @Anjaliavv51

[github-actions[bot]]

Hi there! Thanks for opening this issue @siri-chandana-macha!. We appreciate your contribution to this open-source project. We aim to respond or assign your issue as soon as possible.

[Anjaliavv51]

@siri-chandana-macha go ahead.