Add NUCLEO-C092RC variant

[showengineer]

Summary

This PR fixes/implements the following bugs/features

• Adding NUCLEO-C092RC board as a variant
• Maps USART3_IRQn and USART4_IRQn to USART3_4_IRQn for STM32C0 processors

Validation

• Ensure CI build is passed.
• Checked with CheckVariant sketch

Code formatting

• Ensure AStyle check is passed thanks CI

Notes
I mostly copied the variant files from the NUCLEO-C071RB variant, since both chips share the same pinout and most peripherals. I have not checked if FDCAN works, all else seems to work perfectly fine.

[fpistm]

Hi @showengineer

Thanks for the PR.
I've made a first review, could you add also the generic (clock config, boards.txt, and reference in the README.md).
And fix the astyle issues.

[fpistm]

Seems not be a copy of the PeripheralPins.c version should be 6.0.140

[showengineer]

I honestly do not know how this one should have been generated. I had copied over the one from C071-RB first, but then copied the contents of the generic variant of the C092 with the necessary edits but not the header. So it's edited manually, which is probably not the way it should be 😅.

In any case, how is this file normally produced? Couldn't find it in the wiki.

[fpistm]

The custom file is a copy of the one in the generic folder then edited manually to remove some pins.

[showengineer]

Hm, you would expect that if you'd run astyle to fix formatting, that the same astyle would also pass all the formatting checks...

[fpistm]

Hm, you would expect that if you'd run astyle to fix formatting, that the same astyle would also pass all the formatting checks...

Yes but they are rules and configuration to use.
See https://github.com/stm32duino/Arduino_Core_STM32/wiki/Astyle