HAL renaming & relocation (#215)

Implemented more consistent naming:
- Moved all HAL devices into their own namespace (and related folder)
- Post-fixed all HAL device names with "Device"

Boards/CYD-2432S024C/Source/hal/YellowDisplay.cpp

@@ -71,7 +71,7 @@ void setBacklightDuty(uint8_t backlightDuty) {
 }
 
 
-std::shared_ptr<tt::hal::Display> createDisplay() {
+std::shared_ptr<tt::hal::display::DisplayDevice> createDisplay() {
 
     auto touch = std::make_shared<YellowTouch>();