[aot_inductor] move CudaWrapperCodeGen into a separate file (#119870)
This reverts commit 3ab08946d5052eaeda11d683d6a58e801a032755.
Differential Revision: [D53817852](https://our.internmc.facebook.com/intern/diff/D53817852)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/119870
Approved by: https://github.com/khabinov
