[FEAT] Include amenity/shelter and tourism/alpine_hut

[treee111]

This PR…

• in tag-wahoo-poi.xml and tags-to-keep.json

Considerations and implementations

• needs adjustment in theme

Pull Request Checklist

• [x] Reviewed the Contributing Guidelines
  • Especially the Pull-Requests section
• [x] Commits (and commit-messages) are understandable
• [x] Tested with macOS / Linux
• [ ] Tested with Windows