Pages API and Small Fixes

Added an API endpoint for pages and images and fixed some smaller issues.

Refactoring

• Query optimization - didn't work, this needs some more infrastructure first

Features

• Added an images endpoint to the API
• Added a pages endpoint to the API
• Added a noindex option to the Blog model to exclude a blog from search engines

Fixes

• Fixed audio web player name embed.js
• Fixed a bug caused by mypy and static protocols raising a NotImplementedError in production :(