Add TMAG5273 Driver (#725)

* Adds outline of the I2C sensor driver.

* Adds register read and write commands.

* Adds a demo class for the magnetic sensor.

* Adds conversions to the demo.

* Decrease sensitivity.

* Adds register modify and sets up angular rotation decoding.

* Adds APIs for offset and gain correction.
Adds API for determining whether the device exists.
Adds return error for the register read command.

* Reads the device ID as well in the demo code.

* Add address enumeration.

* Add alternative constructor and destructor which closes the open file reference if applicable.

* Add friend class for testing. This should eventually be removed.

* Enhance TMAG5273 driver to have a cleaner public interface.

* Fix TMAG5273Demo build.

* Add comment.

* Address review comments.

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Co-authored-by: Balazs Racz <[email protected]>