message: Add GetWorkingDirectory for linux
diff: @@ -147,6 +147,16 @@ std::unique_ptr<PlatformSharedMemory> CreatePlatformSharedMemory(
  void PlatformInit() {}
  +std::string GetWorkingDirectory() {
  + char result[FILENAME_MAX];
  + if (!getcwd(result, sizeof(result)))
  + return "";
  + std::string working_dir = std::string(result, strlen(result));
  + EnsureEndsInSlash(working_dir);
  + return working_dir;
  +}
  +
  +
  std::string NormalizePath(const std::string& path) {
  errno = 0;
  char name[PATH_MAX + 1];
  