Songs: Automatically add artist roles in song based on artist type

[gamerema]

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

Adding multiple artists to one song, especially with different roles, is time-consuming and sometimes confusing.

Describe the solution you'd like. (required)

I think we should auto-assign certain roles for artists with the artist types. (e.g Illustrator artist type -> Illustrator role). However, some artists may have multiple roles (by setting another job in tags) or have a role in the song not matched in types (Arranging, Distributor, Mastering, Mixer, Publisher, Vocal data provider, Voice manipulator) , so we should still keep a manual switch if needed.

Describe alternatives you've considered. (optional)

Set all manually (current) (slow)

How should the UI look like? (illustrate it) (optional)

test.mp4

Additional context (optional)

Artist types crossed out have role alternative

Checklist (required)

Fill out the checklist.

• Searched VocaDB/vocadb for duplicate issues.

[saturclay]

It already effectively does this, but it doesn't tell you that it does. If you add an artist with the illustrator type, for instance, it won't show anything as selected when looking at the artist roles, but once you save the entry, it will show them as an "illustrator" on the finished entry. I guess the question would be, would it be beneficial to also show this when selecting artist roles. I think the one downside would be, if the artist is doing something different from their regular role, then you'd have to both unselect their default role and select the correct role (whereas now you just need to select the correct role).

That said, this doesn't work for the instrumentalist artist type yet, as mentione here: #1635