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.h

@@ -17,6 +17,9 @@ private:
 
 public:
 
+    std::string getName() const final { return "ST7780"; }
+    std::string getDescription() const final { return "SPI display"; }
+
     bool start() override;
 
     bool stop() override;
@@ -25,7 +28,7 @@ public:
     bool isPoweredOn() const override { return poweredOn; };
     bool supportsPowerControl() const override { return true; }
 
-    tt::hal::Touch* _Nullable createTouch() override;
+    std::shared_ptr<tt::hal::Touch> _Nullable createTouch() override;
 
     void setBacklightDuty(uint8_t backlightDuty) override;
     bool supportsBacklightDuty() const override { return true; }
@@ -40,4 +43,4 @@ private:
     static bool startBacklight();
 };
 
-tt::hal::Display* createDisplay();
+std::shared_ptr<tt::hal::Display> createDisplay();