Rollup merge of #74424 - sexxi-goose:move_hir_place, r=nikomatsakis

Rollup merge of #74424 - sexxi-goose:move_hir_place, r=nikomatsakis

Move hir::Place to librustc_middle/hir

Needed to support https://github.com/rust-lang/project-rfc-2229/issues/7

Currently rustc_typeck depends on rustc_middle for definition TypeckTables, etc.
For supporting project-rfc-2229#7, rustc_middle would've to depend on
rustc_typeck for Place -- introducing a circular dependency.

This resembles the MIR equivalent of `Place` located in `lbrustc_middle/mir`.

Separate PR for this move will make the actual PR for using Places to represent captures cleaner/more focused.

r? @nikomatsakis  @matthewjasper