Merge branch 'feature/use-std-filesystem' into 'master'

Always C++ filesystem instead of boost::filesystem:

See merge request !18

Paths/Filesystem.hh

+#pragma once
 // (C) Copyright 2021 by Autodesk, Inc.
 
-#ifndef BASE_FILESYSTEM_HH_INCLUDE
-#define BASE_FILESYSTEM_HH_INCLUDE
-
 #include <Base/Security/Mandatory.hh>
 
-#ifdef __APPLE__
-#include <AvailabilityMacros.h>
-#if __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
-#define FILESYSTEM_USE_BOOST
-#endif // #if __MAC_OS_X_VERSION_MIN_REQUIRED < 101500
-#endif // #ifdef __APPLE__
-// NOTE: Boost required for old versions of MacOS due to lack of std::filesystem
-#ifdef FILESYSTEM_USE_BOOST
-
-#include <boost/filesystem.hpp>
-
-namespace Base
-{
-namespace filesystem = boost::filesystem;
-typedef boost::filesystem::path Path;
-typedef boost::system::error_code error_code;
-} // namespace Base
-
-#else // #ifdef FILESYSTEM_USE_BOOST
-
 // Include <filesystem> but silence resulting C4995 warnings
 INSECURE_INCLUDE_SECTION_BEGIN
 #include <filesystem>
@@ -35,7 +13,3 @@ namespace Base
 namespace filesystem = std::filesystem;
 typedef std::error_code error_code;
 } // namespace Base
-
-#endif // #ifdef FILESYSTEM_USE_BOOST
-
-#endif // BASE_FILESYSTEM_HH_INCLUDE