Allow to configure range (and rate?) of accelerometer

[dpgeorge]

The accelerometer defaults to a 2g max range, but can do up to 8g. The DAL provides a function to get/set the range (and sample rate) of the accelerometer and we should probably expose this in Python. Eg:

accelerometer.set_range(8)
accelerometer.get_range()
accelerometer.set_rate(50) # 50Hz sample rate
accelerometer.get_rate()

[catchpolej]

I am right in thinking that a reading of 1024 using default settings is equal to 'g'?

[dpgeorge]

I am right in thinking that a reading of 1024 using default settings is equal to 'g'?

The return value is is milli-g's, so 1000 is equal to 'g'.

[microbit-mark]

This has been requested again recently in micro:bit support ticket: 37999

It looks like this PR is still open #266
is this something that we can implement? It seems a useful feature and would be comparable to our MakeCode editor.

[dpgeorge]

set_range(value) was implemented in 3148254