serial.redirect() returns a value

[muzkr]

This is a feature request.

Is your feature request related to a problem? Please describe.

The current implementation of serial.redirect() silently discards the return value of uBit.serial.redirect():

uBit.serial.redirect(*getPin(tx), *getPin(rx));

Describe the solution you'd like

serial.redirect() returns a boolean or integer code to indicate the successfulness of redirection.

Describe alternatives you've considered

Make it clear in the comments that there is a possibility that the redirection will be rejected, and under what circumstances.

Additional context

None.