Add NUCLEO-L433RC-P board support

[Kormoran86]

[flit]

Is this a request to add the board, or are you saying you are going to create a pull request to add it yourself?

Does the L433 CMSIS-Pack not work? In other words, is there a specific reason you need built-in L433 support? Generally new built-in targets are not added unless users do the work themselves and create a pull request, since almost all Cortex-M devices are supported via CMSIS-Packs. Remember, open source software works best when users contribute to the project.

[patrislav1]

FWIW, I have the same board, and pyocd works on it as expected with the --target stm32l433rctxp option.

I installed the target with pyocd pack --install stm32l433, it used Keil::STM32L4xx_DFP::2.5.0

Hope that helps.