…efined Planet class and hardcoded a list of instances, and created an endpoint to get all existing planets.

Co-authored-by: Charday Neal <[email protected]>

…ase and Flask. Defined Book Model. Imported model explicitly. Completed initial setup of the database on the Flask end. Generated and applied migration files adding Book model.

… to use absolute imports. Reorganized import statements, grouped by source and sorted alphabetically within groups. Removed old, unused code. Ensured consistency in the use of single and double quotes in strings.

PEP8 Cleanup

…and delete a planet.

Co-authored-by: Pri <[email protected]>
Co-authored-by: Charday Neal <[email protected]>

… Add seed data for database.

"Add wave 6 fixtures and pytest to validate get one planet-found, get one planet-not found, get all planet-empty-db, get all planet- db has 2 entries, post one planet. Add two_saved_planets to database."

…y. Added helper functions to get query parameters from the client request, filter the query based on the client parameters, sort the response body by a client-supplied parameter, and supporting validation for data processed.