Add macros to npm package; rename macros to include vf_ namespace

[pastelcyborg]

Done

• Add _macros/ directory to npm package for publishing to npm
• Rename macros to include vf_ namespace in both filename and macro name

Fixes #5322
Fixes WD-14402

QA

• Pull down this branch
• Run npm publish --dry-run
• See that macro files are now included with published files

Check if PR is ready for release

If this PR contains Vanilla SCSS code changes, it should contain the following changes to make sure it's ready for the release:

• PR should have one of the following labels to automatically categorise it in release notes:
  • Feature 🎁, Breaking Change 💣, Bug 🐛, Documentation 📝, Maintenance 🔨.
• Vanilla version in package.json should be updated relative to the most recent release, following semver convention:
  • if CSS class names are not changed it can be bugfix release (x.x.X)
  • if CSS class names are changed/added/removed it should be minor version (x.X.0)
  • see the wiki for more details
• Any changes to component class names (new patterns, variants, removed or added features) should be listed on the what's new page.

[webteam-app]

Demo

Jenkins

demos.haus

[jmuzina]

Macros added to release artifact files, passing QA