[PP-1] Convert ViewsQuery plugin discovery to attributes

Seems to have test failures.

fixed

All instances appear to be replaced.

I've checked views to see how it uses query plugins and it does not ever call \Drupal\views\Views::fetchPluginNames(). I think that this means we should consider removing the no_ui property - but this is for a follow-up as it is in the annotation too - so should be converted. Also the generic base and display types keys are meaningless and not in the attribute so it's fine to not have them.

Committed and pushed fb396fbd26 to 11.x and a3a4d88526 to 10.3.x. Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.

quietone → closed merge request !6862