streaming-api

Is your feature request related to a problem? Please describe.

Admin users are able to modify other users playlists from the navidrome web client.
But this is not possible from a subsonic client.
As all playlists are imported with the user admin, my family users are not able to manage their playlists from their android phones (DSub app). And moreover if I set them as admin users it will

Add some integration tests including the use of an avro schema registry

Primary goal: Add typings to the published NPM modules.
Secondary goal: Get type checks into the development workflow for Graffy itself.

The preferred approach is to use JSDoc-style function annotations (that TypeScript supports) rather than converting to Typescript syntax.