Add `InputRange...` classes as a replacement for `cppcoro::generator` #6365

Job	Run time
build (gcc, 11, -Wall -Wextra -Werror , Release, true)	11m 28s
build (gcc, 12, -Wall -Wextra -Werror , Release, true)	17m 49s
build (gcc, 13, -Wall -Wextra -Werror , Release, true)	20m 11s
build (clang, 16, -Wall -Wextra -Werror , Release, true)	18m 59s
build (clang, 17, -Wall -Wextra -Werror , Release, true)	18m 12s
build (clang, 18, -Wall -Wextra -Werror , Release, true)	16m 31s
build (gcc, 11, -DUSE_CPP_17_BACKPORTS=ON, Release)	8m 57s
build (clang, 16, RelWithDebInfo, false, -fsanitize=address -fno-omit-frame-pointer)	21m 2s
build (clang, 16, RelWithDebInfo, false, -fsanitize=undefined)	23m 52s
build (clang, 17, Debug, false, -D_NO_TIMING_TESTS=ON, -fsanitize=thread -O1 -g)	21m 13s
	2h 58m 14s

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