* moved filter constants back to d2enum
* moving key and mouse button enums into d2enum
* moving render type enum into d2enum
* moving input even priority enums into d2enum
* moving terminal enums into d2enum
* Save/load hero stats and display them in stats panel.
* Load default hero state for characters created before saving stats was introduced
Co-authored-by: Presiyan Ivanov <presiyan-ivanov@users.noreply.github.com>