message: Remove the shell extension's dependency on fmt for huge savings
  Yeah, this one-line change shaves off almost half the binary.
  Binary size savings (x64 Release):
  Note   | WindowsTerminalShellExt.dll
  |
  Before | 130048
  After  | 73728
  Delta  | -56320
  %Delta | -43.3%
diff: @@ -56,7 +56,7 @@ HRESULT OpenTerminalHere::Invoke(IShellItemArray* psiItemArray,
  siEx.StartupInfo.cb = sizeof(STARTUPINFOEX);
  // Append a "\." to the given path, so that this will work in "C:\"
  - std::wstring cmdline = fmt::format(L"\"{}\" -d \"{}\\.\"", GetWtExePath(), pszName.get());
  + auto cmdline{ wil::str_printf<std::wstring>(LR"-("%s" -d "%s\.")-", GetWtExePath().c_str(), pszName.get()) };
  RETURN_IF_WIN32_BOOL_FALSE(CreateProcessW(
  nullptr,
  cmdline.data(),
  