Auto merge of #143845 - cjgillot:stability-query, r=jieyouxu

Split-up stability_index query

This PR aims to move deprecation and stability processing away from the monolithic `stability_index` query, and directly implement `lookup_{deprecation,stability,body_stability,const_stability}` queries.

The basic idea is to:
- move per-attribute sanity checks into `check_attr.rs`;
- move attribute compatibility checks into the `MissingStabilityAnnotations` visitor;
- progressively dismantle the `Annotator` visitor and the `stability_index` query.

The first commit contains functional change, and now warns when `#[automatically_derived]` is applied on a non-trait impl block. The other commits should not change visible behaviour.

Perf in rust-lang/rust#143845 (comment) shows small but consistent improvement, except for unused-warnings case. That case being a stress test, I'm leaning towards accepting the regression.

This PR changes `check_attr`, so has a high conflict rate on that file. This should not cause issues for review.

Author: bors