chore(versioning): Add semantic versioning CI action

[LinnJS]

Description

Add automated semantic versioning with conventional commits. CI workflows automatically bump versions, update CHANGELOG.md, and create GitHub releases when PRs are merged to main. Includes commit message validation on PRs.

Type of change

• feat
• fix
• docs
• refactor
• test
• chore

Checklist

• Tests added/updated (if applicable) – Scripts tested locally
• Docs updated (README/docs) – Added VERSIONING.md, updated CONTRIBUTING.md and README.md
• Conventional commits followed – This commit uses ci(release): Add automated semantic versioning
• Lint/type checks pass locally – All markdown files pass make lint

Related issues

Closes N/A (infrastructure improvement)

Screenshots

N/A – CI/automation change

Notes for reviewers

What This Adds

Workflows

• .github/workflows/release.yml – Auto-creates releases on main branch merges
• .github/workflows/commit-lint.yml – Validates commit messages on PRs

Scripts

• scripts/bump-version.sh – Auto-detects version bump from conventional commits
• scripts/update-changelog.sh – Generates changelog from commits

Documentation

• docs/VERSIONING.md – Complete guide to versioning process
• Updated CONTRIBUTING.md with commit format requirements
• Updated README.md with versioning guide link

Format Changes

• Reformatted CHANGELOG.md to match automated output format
• Fixed Makefile to suppress Node.js experimental warnings

Commit Format Required

All commits must follow:
type(dir): Description

Example:
feat(lock): Add bulk lock operation

After Merge

The release workflow will not trigger for this chore commit.
To test the automation, merge a PR with a feat():, fix():, perf():, or refactor(): commit to main.

[github-actions]

🏷️ Auto-labeled based on commits: chore

[github-actions]

🏷️ Auto-labeled based on commits: chore