Merge pull request #4024 from IntelOrca/refactor/object-list

Refactor and improve the object system:
- Objects are now exported to user directory under 'object'.
- Object directories are scanned recursively.
- Improves reliability of object loading and handling of bad objects.
- Improve performance of object scanning.
- Only load new objects when loading a new game.
- Improve changing language experience.

src/core/Path.cpp

@@ -74,6 +74,8 @@ namespace Path
 
     utf8 * GetFileNameWithoutExtension(utf8 * buffer, size_t bufferSize, const utf8 * path)
     {
+        path = GetFileName(path);
+
         const utf8 * lastDot = nullptr;
         const utf8 * ch = path;
         for (; *ch != '\0'; ch++)