Migrate parfor to SPIRVKernelDispatcher

[ZzEeKkAa]

What was done:

• Compile parfor kernels using SpirvDispatcher.
• Add internal option to compile kernel with Prange support. This mode inserts prange body instead of __seninel__ = 0. Ideally it must be replace to some internal dedicated function call like numba_dpex.core.insert_parfor_body().
• Remove kernel allocation aside of dpjit compilation. Now parfor kernel specific SPIRV is a part of dpjit function inserted as a string constant. It unblocks dpjit function caching on disk

Checklist:

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• If this PR is a work in progress, are you filing the PR as a draft?

[coveralls]

coverage: 86.252% (-0.8%) from 87.065%
when pulling 41b5d25 on fix/windows-parfor
into a60d032 on main.

[diptorupd]

There are few cleanups such as introducing a new pipeline fr parfor kernel compilation that should be done, can be handled in later PR.

Overall nice set of changes. The parfor kernel generator has become much cleaner after these changes.