message: cmake: Create wasi library
diff: include(ProjectUVWASI)
  +add_library(wasi)
  +add_library(fizzy::wasi ALIAS wasi)
  +target_compile_features(wasi PUBLIC cxx_std_17)
  +target_include_directories(wasi PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
  +target_link_libraries(wasi PRIVATE fizzy::fizzy-internal uvwasi::uvwasi)
  +target_sources(wasi PRIVATE wasi.cpp wasi.hpp)
  +
  add_executable(fizzy-wasi)
  -target_link_libraries(fizzy-wasi PRIVATE fizzy::fizzy-internal uvwasi::uvwasi)
  -target_sources(fizzy-wasi PRIVATE main.cpp wasi.cpp wasi.hpp)
  +target_link_libraries(fizzy-wasi PRIVATE fizzy::wasi)
  +target_sources(fizzy-wasi PRIVATE main.cpp)
  if(UNIX AND NOT APPLE)
  # For libstdc++ up to version 8 (included) this is needed for proper <filesystem> support.
  