Resolve "Backend - Platform - Refactor backend based on feedback from setup"

To Test

• Run the server with cntr + r and run flask:dev, or just run through the vscode run section, or run through terminal with python -m app.server
• Then make a request to the root which will return all, we will change this later
• Then make a request to /health which'll return a health check for the database

Closes #26 (closed)