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/M5stackCoreS3/Source/Axp2101/Axp2101.h

@@ -9,7 +9,7 @@
  * - https://github.com/m5stack/M5Unified/blob/master/src/utility/AXP2101_Class.cpp
  * - http://file.whycan.com/files/members/6736/AXP2101_Datasheet_V1.0_en_3832.pdf
  */
-class Axp2101 : I2cDevice {
+class Axp2101 final : public tt::hal::i2c::I2cDevice {
 
 public:
 
@@ -21,6 +21,9 @@ public:
 
     explicit Axp2101(i2c_port_t port) : I2cDevice(port, AXP2101_ADDRESS) {}
 
+    std::string getName() const final { return "AXP2101"; }
+    std::string getDescription() const final { return "Power management with I2C interface."; }
+
     bool setRegisters(uint8_t* bytePairs, size_t bytePairsSize) const;
 
     bool getBatteryVoltage(float& vbatMillis) const;