PUBLISHING.md

1. Commit and validate all the changes so far.
2. Update CHANGELOG.md for the new version. Make sure you don't have any other changes.
3. git add CHANGELOG.md
4. npm version -f [major|minor|patch]
5. git push --follow-tags
6. Wait for the Github Actions to be complete. Download artifact.zip
7. Upload ios-debug-<version>.vsix to the Github Release as well as VS Code Marketplace.