Permissions: Allow (non-admin) users to add/remove own Music Providers + Set permissions from within Music Provider settings

[remon1496]

Allow (non-admin) users to add/remove own Music Providers

The problem:
Currently, the admin always has to manage Music Providers for all users. This can be a hard thing to do. It might be that user X wants to have access to Spotify. Currently, he has to give all credentials to the admin. Or let’s say Apple Music. Once every 180 days, the admin has to interact with the user to refresh the authentication. Or let's say the user wants to add a provider for audiobooks and only sync progress with his own account. By design, this already requires a separate instance of the music provider per user. If users could manage their own account, this would make managing the MA server a lot easier. I'm sure the above situations might apply to other Music Providers ass wel, these are just the ones out of the top of my head.

The solution:
Allow users to manage their own Music Providers, but of course, still make them visible by admins in the settings. At the same time, all other users should not (by default) have access to the Music Provider that has been set up by another (non-admin) user.
Naming the provider: Currently, the default name of a provider is applied when setting up the provider (E.g. 'Spotify'). For a clear overview of multiple instances of Music Providers to an admin, it would make sense to name the provider: "Music Provider Name" - "Username of person that set up the Provider”. But the admin can still assign these (which fall together with my next suggestion).

Set permissions from within Music Provider settings

The problem:
Currently, if a Music Provider is set up, by default, it would show the Music Provider based on the Permissions set in the user profile. If a user has limited specified access to Music Providers, after the setup of a new Music Provider, the admin has to navigate to each individual user to allow access to the new Music Provider.

The solution:
It would make sense to also be able to set permissions (as an Admin) from within the Music Provider's settings page. This will cover a lot of different scenarios and 'flows' based on the current goal/task of the admin.

A couple of examples:

1. Let’s say I’m setting up a new provider, directly being able to assign this to 3 out of the 4 users would be very fast from within the Music Provider's settings page. This way you don't have to go to the 3 separate users’ accounts and assign the Music Provider in here.
2. Let’s say there already is a provider setup and user 1, 2, 3 and 4 all have access to this, but I want to remove it’s access from 1 user, I can quickly see all users with access to the Music Provider and unassign 1, or more users from here.
3. Let’s say I want to set specific providers for a certain user, I can go into their profile settings and allow/disallow access to/from multiple providers at once (this is currently the only way, but I think we should have both to make management overall a lot easier).