[llvm] [TableGen] Print memory stats in detailed record emitter (PR #106990)

[Rahul Joshi via llvm-commits]

jurahul wrote:

The motivation was https://github.com/llvm/llvm-project/pull/106986 where I wanted to see how much reduction in memory footprint the change results in.

https://github.com/llvm/llvm-project/pull/106990