- Add Localization.h/cpp with singleton pattern for translation management - Add translation keys to en_US.json and es_ES.json for UI elements - Update C++ files to use LUS_LOC() macro instead of hardcoded strings: * InputEditorWindow.cpp - Button and input mapping texts * ConsoleWindow.cpp - Clear button functionality * GfxDebuggerWindow.cpp - Debug and texture loading texts - Initialize language loading in OTRGlobals.cpp based on settings - Support both English (en_US) and Spanish (es_ES) languages - All translations loaded from JSON files, no hardcoded text in C++ This implements the requested translation system following the existing pattern used throughout the codebase.