[Inductor] Setting kernel launch and exit callbacks for inductor generated triton kernels (#119450)
`CompiledKernel.launch_enter_hook` and `CompiledKernel.launch_exit_hook` are hooks that allow external tools to monitor the execution of Triton kernels and read each kernel's metadata. Initially, these hooks have a value of `None`.
Triton's kernel launcher passes hooks and kernel metadata by default, while Inductor's launcher doesn't. This PR could unify the parameters passed to both launchers so that tools can get information from both handwritten Triton kernels and Inductor-generated Triton kernels.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/119450
Approved by: https://github.com/jansel
