[mlir][Linalg] Refactor HoistPadding and add support for hoisting in the absence of packing loops.

This revision cleans up the implementation of hoist padding and extends it to also work in the
absence of packing loops.
This allows better composition when hoisting the padded result of a DPS operation.

A systematic usage of RewriterBase is applied to the implementation.

Depends on: D144856

Differential Revision: https://reviews.llvm.org/D144855