Mark OLESEN authored Oct 03, 2023 and Andrew Heather committed Oct 11, 2023

- change write(const string&) to write(const std::string&).
  This allows output of std::string without an intermediate copy.

- additional writeQuoted method to handle range of char data:

     writeQuoted(const char* str, std::streamsize len, bool)

  This helps with supporting string_view and span<char>

- add operator<< for stdFoam::span<char> and std::string_view (c++17)

- avoid duplicate code in OBJstream

STYLE: add override keyword for IO stream methods