[FEATURE] expose the sampled current results from the FOCMotor::loopFOC function in each cycle for sharing the same results

[zyy37]

Is your feature request related to a problem? Please describe.
Could you expose the sampled current results from the FOCMotor::loopFOC function in each cycle? This way, the current can be sampled once per cycle, and the user module code and your code can share the same sampled current results.