message: make go module cache rw
diff: @@ -46,6 +46,7 @@ add_custom_command(
  COMMAND
  env "PATH=${ENV_PATH}" "GOPATH=${GOPATH}" go build
  --modfile "${GO_MOD_FILE_PATH}"
  + -modcacherw
  -buildmode=c-archive
  -o "${VM_CALLER_LIB}"
  "${CMAKE_CURRENT_SOURCE_DIR}/main.go"
  