Add `InputRange...` classes as a replacement for `cppcoro::generator`… #6392

Job	Run time
build (gcc, 11, -Wall -Wextra -Werror , Release, true)	45m 45s
build (gcc, 12, -Wall -Wextra -Werror , Release, true)	49m 27s
build (gcc, 13, -Wall -Wextra -Werror , Release, true)	44m 8s
build (clang, 16, -Wall -Wextra -Werror , Release, true)	49m 55s
build (clang, 17, -Wall -Wextra -Werror , Release, true)	48m 22s
build (clang, 18, -Wall -Wextra -Werror , Release, true)	47m 9s
build (gcc, 11, -DUSE_CPP_17_BACKPORTS=ON, Release)	38m 25s
build (clang, 16, RelWithDebInfo, false, -fsanitize=address -fno-omit-frame-pointer)	1h 17m 12s
build (clang, 16, RelWithDebInfo, false, -fsanitize=undefined)	1h 1m 56s
build (clang, 17, Debug, false, -D_NO_TIMING_TESTS=ON, -fsanitize=thread -O1 -g)	1h 6m 12s
	8h 48m 31s

Provide feedback