WIP on adding sized output support to copy_if with device policies #5202

Job	Run time
HOST,bknd=omp,cmplr=clang++,macos-latest,std=c++17,cfg=release	11m 33s
clang-format	28s
HOST,bknd=tbb,cmplr=icx-cl,windows-latest,std=c++17,cfg=release	25m 26s
HOST,bknd=serial,cmplr=cl,windows-latest,std=c++20,cfg=RelWithAsserts	19m 40s
HOST,bknd=tbb,cmplr=cl,windows-latest,std=c++17,cfg=release	21m 33s
CPU,bknd=dpcpp,cmplr=icx,windows-latest,std=c++17,cfg=release	24m 49s
CPU,bknd=dpcpp,cmplr=icx,windows-latest,std=c++20,cfg=RelWithAsserts	46m 28s
HOST,bknd=tbb,cmplr=icx-cl,windows-latest,std=c++20,cfg=RelWithAsserts	34m 0s
FPGA_EMU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	28m 44s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	17m 54s
HOST,bknd=omp,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	8m 38s
HOST,bknd=tbb,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	12m 57s
HOST,bknd=omp,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	13m 14s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++17,cfg=release	15m 34s
HOST,bknd=tbb,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	12m 45s
HOST,bknd=serial,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	6m 31s
HOST,bknd=omp,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	10m 47s
HOST,bknd=tbb,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	21m 30s
HOST,bknd=serial,cmplr=g++,ubuntu-latest,std=с++20,cfg=RelWithAsserts	9m 21s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	36m 46s
HOST,bknd=omp,cmplr=icpx,ubuntu-latest,std=с++20,cfg=RelWithAsserts	25m 43s
	6h 44m 21s

Provide feedback