[Fix] Support ActionExperimenter sub classes to be deserialized from bytes

[viniarck]

Fixes #87

• Augmented InstructionAction.from_of_instruction to support deserializing ActionExperimenter from FlowStats entries.

NApps who register ActionExperimenter experimenter classes are supposed to also register the deserialization accordingly.

I'll post the local tests on https://github.com/kytos-ng/flow_stats/issues/43

[viniarck]

LGTM

Thanks for reviewing, Italo