Auto merge of #153656 - aerooneqq:split-ast-lowering-resolver, r=petrochenkov

Abstract AST lowering resolver



This PR adds new methods for `ResolverAstLoweringExt` for future use in rust-lang/rust#153489 and abstracts resolver in lowering through generic parameters.

> ~This PR splits resolver for AST lowering into two parts: mutable and readonly. This will allow us to use borrowed resolver in rust-lang/rust#153489, when we will not steal but borrow resolver from resolve stage.~

Second step for rust-lang/rust#153489.

r? @petrochenkov

Author: bors