Use generic ProducesResponseTypeAttribute instead of typeof(...)

[Abrynos]

Checklist

• [x] I read and understood the Contributing Guidelines.
• [x] This is not a duplicate of an existing merge request.
• [x] I believe this falls into the scope of the project and should be part of the built-in functionality.
• [x] My code follows the code style of this project.
• [x] I have added tests to cover my changes, wherever they are necessary.
• [x] All new and existing tests pass.

Changes

The code now uses the generic version of ProducesResponseType on the controller methods in the IPC server to get rid of the overly explicit typeof(...) we've previously used.

New functionality

None

Changed functionality

None

Removed functionality

None

Additional info

Thank you for considering the inclusion of this merge request.

[JustArchi]

Did you check if this works with swagger, that is, correct structures are reported in swagger json, which is pretty much the only consumer of those attributes?

Easiest to download swagger.json generated before and after this change, diff them and see if they're the same.

[Abrynos]

Did you check if this works with swagger

Yeah. Previously I had only checked swagger UI, but for the sake of the argument I just went and did a diff on the JSON structure as well and there was zero changes.

[JustArchi]

Great, this is golden then, thanks a lot! :trophy: