Add CAN FD high-speed baud rate support

[PhilippBleimund]

Summary

Extends set_can_baud_rate to accept the new five CAN FD baud rate codes (5–9).

Changes

• Adds CAN_FD_BAUD_RATE_CODES mapping codes 5–9 to their corresponding bit rates (2M–5M).
• Updates the validation in set_can_baud_rate to accept codes from either CAN_BAUD_RATE_CODES or CAN_FD_BAUD_RATE_CODES.
• persist flag for set_can_baud_rate since the motor has a limiting number of writes. Default is true so that existing implementations wont break.

Notes

• Switching between can and can fd still requires multiple manual steps. The user needs to change the baudrate on the old bus but the parameter store needs to hapen on a new but with the respective change.