Add auto-label workflow for issues and PRs

[HarmiBhikadiya]

Summary

Added GitHub Actions automation for automatic issue and PR labeling.

Changes Made

• Added .github/workflows/auto-label.yml
• Added .github/labeler.yml
• Auto-label issues based on title keywords
• Auto-label pull requests based on changed files

Type of Change

• Bug fix
• New feature
• Documentation update
• Refactor

Testing

• I ran backend tests (pytest -q)
• I tested frontend behavior manually

Checklist

• Code is readable and beginner-friendly
• No fake or placeholder behavior introduced
• Documentation updated if needed

Implementation Proof

Attached screenshot showing:

• .github/workflows/auto-label.yml
• .github/labeler.yml
• repository structure

Closes #127

[HarmiBhikadiya]

I have implemented the auto-label workflow for issues and PRs as requested. Please review my PR. Thank you!

[imDarshanGK]

@HarmiBhikadiya Please update the PR with screenshots or implementation proof so the changes can be verified easily.
and resolve conflicts.

[HarmiBhikadiya]

Updated the branch with the latest changes, resolved merge conflicts, and added implementation proof screenshots to the PR description. All requested changes have been completed. Please review the PR. Thank you!

[imDarshanGK]

@HarmiBhikadiya Please align the workflow with the repository’s actual label names. The repo has [type:bug], [type:docs], and [type:testing] labels, not bug, documentation, or testing. Right now the issue auto-label step will try to apply labels that do not exist, so the automation won’t work as expected. After fixing the label names, please re-check the PR.

[HarmiBhikadiya]

Updated the workflow to use the repository's actual label names (type:bug, type:docs, and type:testing) as requested. Please review the updated changes. Thank you!