REST APIs with Flask and Python Files

Multiple upgrades and a new feature: docker compose.

• Add warning about missing data.db in repo when doing first deploy via [#136]
• Add metadata for publishing course on Teclado
• Use Cloudinary for image hosting
• Fix text rendering in top banner via [#139]
• Update Python base image to bookworm via [#142]
• Use __name__ in blueprint definitions via [#143]
• Use emails/action.html instead of emails/registration.html via [#144]
• Remove creating db when running app; instead doing it via db migrations, via [#145]
• Add missing ItemSchema import on section 6 via [#146]
• Remove unnecessary compare_type in Alembic config file via [#147]
• Add information on running app and database with Docker Compose via [#147]
• Fix JS dependencies for Docusaurus upgrade via [#156]
• Add optional store_id to ItemUpdateSchema via [#157]
• Add missing os import in Flask-SQLAlchemy configuration lecture (S06 L04) via [#158]
• Remove unnecessary version key in docker-compose.yml files via [#159]
• Add info on running arbitrary commands in a Docker Compose container via [#160]