Add GitHub Workflow for Automatic Issue Closing

[GautamBytes]

Description

This PR adds a GitHub Actions workflow to automatically close issues when related PRs are merged, improving project maintenance and issue tracking accuracy.

Fixes #169

Changes Made

• Added: .github/workflows/close-issues.yml - GitHub Actions workflow file
• Features:
  • Automatic issue closing when PRs are merged to main
  • Manual trigger option for batch closing issues
  • Proper error handling and logging
  • Comments added to closed issues for transparency

How It Works

Automatic Mode

• Triggers when PRs are merged to main branch
• Scans PR titles and descriptions for linking keywords:
  • fixes #123, closes #456, resolves #789
  • fix #123, close #456, resolve #789
• Automatically closes referenced issues
• Adds comment: "Automatically closed by PR #[PR_NUMBER]"

Manual Mode

• Can be triggered manually from Actions tab
• Allows batch closing of specific issues
• Useful for cleaning up issues that were already fixed

Testing

• Workflow follows existing project formatting standards (matches formatting.yml)
• Uses built-in GITHUB_TOKEN (no additional permissions needed)
• Includes comprehensive error handling for edge cases

Benefits

• ✅ Reduces manual maintenance overhead
• ✅ Keeps issue tracker accurate and organized
• ✅ Follows GitHub best practices for issue linking
• ✅ No process changes required for contributors
• ✅ Flexible (both automatic and manual modes)

Future Usage

Contributors can continue using standard GitHub linking patterns in PRs:

This PR adds the new dashboard feature.

Fixes #45, closes #67

The workflow will handle the rest automatically!

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Note: This addresses the current problem where multiple issues remain open despite being fixed in merged PRs, helping maintain better project organization.

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[GautamBytes]

/assign @Monokaix