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.

TactilityHeadless/Source/hal/Hal.cpp

@@ -1,3 +1,4 @@
+#include "Tactility/hal/Device.h"
 #include "Tactility/hal/Hal_i.h"
 #include "Tactility/hal/i2c/I2c.h"
 
@@ -28,6 +29,12 @@ void init(const Configuration& configuration) {
         if (!configuration.sdcard->mount(TT_SDCARD_MOUNT_POINT)) {
             TT_LOG_W(TAG, "SD card mount failed (init can continue)");
         }
+        hal::registerDevice(configuration.sdcard);
+    }
+
+    if (configuration.power != nullptr) {
+        std::shared_ptr<tt::hal::Power> power = configuration.power();
+        hal::registerDevice(power);
     }
 
     kernel::systemEventPublish(kernel::SystemEvent::BootInitHalEnd);