* feat: Adds a key-value endpoint to store the state of dashboard filters
* Fixes pylint issues
* Adds openapi schemas
* Adds more tests, move logic to commands and use singular form for the endpoint name
* Fixes model description
* Removes database model
* Adds open api specs
* Simplifies the commands
* Adds more tests
* Validates the value content and submits the correct http status code
* Fixes import order
* Skips flakky test
* Fixes tests
* Updates UPDATING.md