* 📝 Start How To docs section, move Peewee, remove Peewee from dependencies
* 🚚 Move em files to new locations
* 🚚 Move and re-structure advanced docs, move relevant to How To
* 🔧 Update MkDocs config, new files in How To
* 📝 Move docs for Conditional OpenAPI for Japanese to How To
* 📝 Move example source files for Extending OpenAPI into each of the new sections
* ✅ Update tests with new locations for source files
* 🔥 Remove init from Peewee examples
