Implement device management (#199)

- Added `tt::hal::Device` and functions (de)register devices and search for them.
- Refactored apps: `Power` and `Display` settings apps now use the device API to find devices.
- Implemented the new API for all existing drivers for all devices, including the simulator.
- Updated HAL Configuration to return `std::shared_ptr` instead of raw pointers.
- Added test project for headless tests and implemented tests for the new code.

Boards/LilygoTdeck/Source/hal/TdeckDisplay.cpp

@@ -191,8 +191,8 @@ void TdeckDisplay::setPowerOn(bool turnOn) {
     }
 }
 
-tt::hal::Touch* _Nullable TdeckDisplay::createTouch() {
-    return static_cast<tt::hal::Touch*>(new TdeckTouch());
+std::shared_ptr<tt::hal::Touch> _Nullable TdeckDisplay::createTouch() {
+    return std::make_shared<TdeckTouch>();
 }
 
 void TdeckDisplay::setBacklightDuty(uint8_t backlightDuty) {
@@ -233,6 +233,6 @@ void TdeckDisplay::setGammaCurve(uint8_t index) {
     }
 }
 
-tt::hal::Display* createDisplay() {
-    return static_cast<tt::hal::Display*>(new TdeckDisplay());
+std::shared_ptr<tt::hal::Display> createDisplay() {
+    return std::make_shared<TdeckDisplay>();
 }