I2C improvements and fixes (#201)

- Show I2C device name in I2C Scanner app
- Register various I2C devices from board implementations
- Fix M5Stack Core2 power status
- Fix pre-allocation issue in `hal::Device`

Boards/UnPhone/Source/UnPhoneFeatures.h

@@ -7,12 +7,11 @@
 /**
  * Easy access to GPIO pins
  */
-class UnPhoneFeatures {
+class UnPhoneFeatures final {
 
 private:
 
     esp_io_expander_handle_t ioExpander = nullptr;
-    Bq24295 batteryManagement = Bq24295(I2C_NUM_0);
     tt::Thread buttonHandlingThread;
     bool buttonHandlingThreadInterruptRequest = false;
 
@@ -21,9 +20,14 @@ private:
     static bool initPowerSwitch();
     bool initGpioExpander();
 
+    std::shared_ptr<Bq24295> batteryManagement;
+
 public:
 
-    UnPhoneFeatures() = default;
+    explicit UnPhoneFeatures(std::shared_ptr<Bq24295> bq24295) : batteryManagement(std::move(bq24295)) {
+        assert(batteryManagement != nullptr);
+    }
+
     ~UnPhoneFeatures();
 
     bool init();