ci: Run bsim_bt tests and collect coverage results

Compile and run the tests avaliable in bsim_bt
and collect the coverage results into the coverage report.

Also, detect if bsim's component folder already contains the
nRF52 HW models, and if it does instead of trying to fetch
them again (which will fail) check that the right versio is
present. This should ease testing locally.

Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>
2 files changed