REXM: ADDED: Automated-testing system
Elements tested:
```
TESTING_FAIL_INIT = 1 << 0, // Initialization (InitWindow()) -> "INFO: DISPLAY: Device initialized successfully"
TESTING_FAIL_CLOSE = 1 << 1, // Closing (CloseWindow()) -> "INFO: Window closed successfully"
TESTING_FAIL_ASSETS = 1 << 2, // Assets loading (WARNING: FILE:) -> "WARNING: FILEIO:"
TESTING_FAIL_RLGL = 1 << 3, // OpenGL-wrapped initialization -> "INFO: RLGL: Default OpenGL state initialized successfully"
TESTING_FAIL_PLATFORM = 1 << 4, // Platform initialization -> "INFO: PLATFORM: DESKTOP (GLFW - Win32): Initialized successfully"
TESTING_FAIL_FONT = 1 << 5, // Font default initialization -> "INFO: FONT: Default font loaded successfully (224 glyphs)"
TESTING_FAIL_TIMER = 1 << 6, // Timer initialization -> "INFO: TIMER: Target time per frame: 16.667 milliseconds"
```