The BME68X library is *linked* against the MicroPython bindings, rather than compiled directly in.
This saves specifing the list of target files twice.
This changeset brings the BOSCH BME68X Sensor API library in as a submodule and makes it buildable with CMake.
A thin wrapper- the BME68X driver- provides simple init, configure, read_forced and read_parallel functions.
Two BME688 examples are available for forced-mode and parallel-mode operation.