replace sycl::queue* with sycl::queue and rename dp.cpp files

[dc3671]

We should not use sycl::queue in pointer format. It's already a container of actual pointer(from https://intel.github.io/llvm-docs/doxygen/queue_8hpp_source.html):

Also, we should not use *.dp.cpp as filenames. Just use *.cpp.

We applied these modifications in our forked repo for transform inference part. We can apply these to other parts in this repo,too.

@delock @CaoZhongZ

[delock]

I'm okay with the change. Need to check UT passrate.

[dc3671]

@delock How to run UT? Anyone could help to do that?