Add automatic selection of Wire/SPI interface

[giulcioffi]

This PR allows to create the IMU object with SPI interface if LSM6DS_DEFAULT_SPI and LSM6DS_INT are defined in the core.
If the LSM6DS_DEFAULT_SPI define is not present, the IMU will use the I2C, as it was before.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Memory usage change @ 5b7e3f9

Board	flash	%	RAM for global variables	%
arduino:mbed_nano:nanorp2040connect	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/SimpleAccelerometer flash	%	examples/SimpleAccelerometer RAM for global variables	%	examples/SimpleGyroscope flash	%	examples/SimpleGyroscope RAM for global variables	%	examples/SimpleTemperature flash	%	examples/SimpleTemperature RAM for global variables	%
arduino:mbed_nano:nanorp2040connect	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0

Click for full report CSV

Board,examples/SimpleAccelerometer<br>flash,%,examples/SimpleAccelerometer<br>RAM for global variables,%,examples/SimpleGyroscope<br>flash,%,examples/SimpleGyroscope<br>RAM for global variables,%,examples/SimpleTemperature<br>flash,%,examples/SimpleTemperature<br>RAM for global variables,%
arduino:mbed_nano:nanorp2040connect,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0

[giulcioffi]

@facchinm If you are okay I would merge the PR and make a new release in the following days.