add trait IsKernelTriviallyCopyable

[AuroraPerego]

following the request in #2248, this adds the same trait introduced previously for kernel arguments also for the kernel itself, with the same approach used in #2198.

[AuroraPerego]

I've no idea why the tests failed with rocm 5.7 and passed with 5.1 to 5.6 and 6.0 :(
The one that fails is mathTest, with Idx i: 634 computed : (0.890482,-7237.58) vs expected: (0.893934,-7237.59).

[psychocoderHPC]

I've no idea why the tests failed with rocm 5.7 and passed with 5.1 to 5.6 and 6.0 :( The one that fails is mathTest, with Idx i: 634 computed : (0.890482,-7237.58) vs expected: (0.893934,-7237.59).

looks like a small rounding issue, I would ignore it for now because it is hard to find. COuld be that we are to strict with the precision.