Function normalize_newlines

tests/test-chat-template.cpp:219–226

static std::string normalize_newlines(const std::string & s) {
#ifdef _WIN32
  static const std::regex nl_regex("\r\n");
  return std::regex_replace(s, nl_regex, "\n");
#else
  return s;
#endif
}


static std::string format_using_common(