[llvm] [mlir] [mlir] Move InlinerInterface from Transforms to Interfaces. (PR #84878)

[Mehdi Amini via llvm-commits]

joker-eph wrote:

Nit: your PR does not have a description. The title provides the "what" but the description should provide the context / the "why".

https://github.com/llvm/llvm-project/pull/84878