Project generator improvements

[blaix]

• Move project template to its own "Pretty Nice Starter" repo.
• prettynice init
  • Rewrite CLI #41
  • take optional directory name, ask if one not passed
  • do a shallow clone of starter repo? (see what epicli does)
• Readme should have npx prettynice init front and center
• Opinionated routing setup
• ws4sql
• migrations
• look at list of epic stack features for inspiration
• video showing off the project starter á la Kent Dodds'.