CMake: Add sload_f2fs tool #177

Job	Run time
Upload the source	3m 24s
macos (macos-11)	15m 17s
linux (opensuse/leap:latest, clang gcc11-c++, CC=clang CXX=clang++)	4m 11s
macos (macos-12)	3m 24s
linux (opensuse/tumbleweed, gcc gcc-c++)	3m 14s
macos (macos-13)	4m 40s
linux (opensuse/tumbleweed, clang, CC=clang CXX=clang++)	3m 23s
linux (archlinux:base, gcc)	2m 56s
linux (archlinux:base, clang, CC=clang CXX=clang++)	3m 2s
linux (ubuntu:20.04, gcc-10 g++-10, CC=gcc-10 CXX=g++-10)	2m 50s
linux (ubuntu:20.04, clang-11 libstdc++-10-dev, CC=clang-11 CXX=clang++-11)	3m 7s
linux (alpine, gcc, CC=gcc CXX=g++)	2m 52s
linux (fedora:latest, gcc gcc-g++)	3m 22s
linux (fedora:rawhide, gcc gcc-g++)	2m 59s
	58m 41s

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