Develop up-to-date API, remove code duplication

[rgon]

Using the same type hints, we could reduce the same code duplication in #1, reducing LOC count and overhead when adding features.

[rgon]

Option 1: proprietary REST API

• Easiest to consume probably

Option 2: graphQL Api

• Like the one in DanteGateway from Dante Controller's 4.15
• Probably shortest to implement in the backend with strawberry-graphql
• Probably best for UI (existing libraries allow push/auto-updating components etc)

Other existing standards?

• Aes70
  https://ocaalliance.com/what-is-aes70/
  see: https://github.com/DeutscheSoft/aes70explorer
  quick overview: https://www.doctorproaudio.com/content.php?2977-aes70-control-oca-2021