WIP on adding sized output support to copy_if with device policies #5201

Job	Run time
HOST,bknd=omp,cmplr=clang++,macos-latest,std=c++17,cfg=release	8m 26s
clang-format	1m 0s
HOST,bknd=tbb,cmplr=icx-cl,windows-latest,std=c++20,cfg=RelWithAsserts	35m 22s
CPU,bknd=dpcpp,cmplr=icx,windows-latest,std=c++20,cfg=RelWithAsserts	46m 38s
HOST,bknd=tbb,cmplr=icx-cl,windows-latest,std=c++17,cfg=release	24m 51s
HOST,bknd=serial,cmplr=cl,windows-latest,std=c++20,cfg=RelWithAsserts	18m 48s
CPU,bknd=dpcpp,cmplr=icx,windows-latest,std=c++17,cfg=release	26m 17s
FPGA_EMU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	29m 29s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	18m 19s
HOST,bknd=tbb,cmplr=cl,windows-latest,std=c++17,cfg=release	21m 27s
HOST,bknd=omp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	12m 39s
HOST,bknd=tbb,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	13m 5s
HOST,bknd=omp,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	11m 19s
HOST,bknd=tbb,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	14m 28s
HOST,bknd=omp,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	8m 36s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	37m 0s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	20m 32s
HOST,bknd=serial,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	6m 48s
HOST,bknd=omp,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	25m 47s
HOST,bknd=serial,cmplr=g++,ubuntu-latest,std=с++20,cfg=RelWithAsserts	9m 19s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	15m 14s
	6h 45m 24s

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