Add stm32 device and host controllers

[rahmanih]

[github-actions[bot]]

Test Results

3 018 tests   3 018 :heavy_check_mark:  41m 17s :stopwatch:      17 suites         0 :zzz:      17 files           0 :x:

Results for commit 88240ba1.

[github-actions[bot]]

Package	Line Rate	Branch Rate	Health
core.src	96%	92%	✔
usbx_device_classes.src	97%	93%	✔
usbx_host_classes.src	97%	93%	✔
Summary	97% (7598 / 7849)	93% (3372 / 3632)	✔

[wickste]

Thank you @rahmanih - this looks good!

I will need to hold off on merging it for the moment as we are still finalizing the new development process. We need to make sure all new contributions are compliant with that process, so we can continue to obtains safety certification for this code base.

[rahmanih]

closing this PR as it'll be delivered in a dedicated repository.