Add PR title check workflow

[rjan90]

Related Issues

Closes: #12148

Proposed Changes

A GitHub Actions workflow to automatically check and enforce a consistent format for PR titles.

Key features of the PR title check workflow:

Checklist

Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, build, chore, ci, docs, perf, refactor, revert, style, test
  • area, e.g. api, chain, state, mempool, multisig, networking, paych, proving, sealing, wallet, deps
• Update CHANGELOG.md or signal that this change does not need it.
  • If the PR affects users (e.g., new feature, bug fix, system requirements change), update the CHANGELOG.md and add details to the UNRELEASED section.
  • If the change does not require a CHANGELOG.md entry, do one of the following:
    • Add [skip changelog] to the PR title
    • Add the label skip/changelog to the PR
• New features have usage guidelines and / or documentation updates in
  • Lotus Documentation
  • Discussion Tutorials
• Tests exist for new functionality or change in behavior
• CI is green

[github-actions]

Your PR title does not match the required format. Please update it to follow this convention: <type>: <scope>: <subject>

Types: feat, fix, docs, style, refactor, test, chore
Scope: required
Subject: start with lowercase

[rjan90]

Maybe a little too aggressive closing the PR if it does not conform to the title standards. Will adjust😅