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/UnPhone/Source/hal/UnPhoneDisplay.h

@@ -11,16 +11,21 @@ class UnPhoneDisplay : public tt::hal::Display {
 private:
 
     lv_display_t* displayHandle = nullptr;
+    uint8_t* buffer1 = nullptr;
+    uint8_t* buffer2 = nullptr;
 
 public:
 
+    std::string getName() const final { return "HX8357"; }
+    std::string getDescription() const final { return "SPI display"; }
+
     bool start() override;
 
     bool stop() override;
 
-    tt::hal::Touch* _Nullable createTouch() override;
+    std::shared_ptr<tt::hal::Touch> _Nullable createTouch() override;
 
     lv_display_t* _Nullable getLvglDisplay() const override { return displayHandle; }
 };
 
-tt::hal::Display* createDisplay();
+std::shared_ptr<tt::hal::Display> createDisplay();