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/bq24295/Bq24295.h

@@ -4,7 +4,7 @@
 
 #define BQ24295_ADDRESS 0x6BU
 
-class Bq24295 : I2cDevice {
+class Bq24295 final : public tt::hal::i2c::I2cDevice {
 
 private:
 
@@ -12,6 +12,10 @@ private:
 
 public:
 
+    std::string getName() const final { return "BQ24295"; }
+
+    std::string getDescription() const final { return "I2C-controlled single cell USB charger"; }
+
     enum class WatchDogTimer {
         Disabled = 0b000000,
         Enabled40s = 0b010000,