TactilityC improvements (#359)

- Expose HAL Configuration's `UiScale`
- Updated docs
- Fix for `tt_timer_alloc()`
- Changed `enum class` to regular C `enum`
- Renamed enums (add prefix)
- Include `<stdbool.h>` where needed

TactilityC/Include/tt_timer.h

@@ -3,13 +3,13 @@
 #include "tt_thread.h"
 #include <freertos/FreeRTOS.h>
 
+#include <stdint.h>
+#include <stdbool.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include <stdint.h>
-#include <stdbool.h>
-
 /** The handle that represents a timer instance */
 typedef void* TimerHandle;