feat(v2): full implementation for kafka bindings

[PlugaruT]

Changes

• Full implementation of Kafka bindings

One line description for the changelog

• Tests pass
• Appropriate changes to README are included in PR

[PlugaruT]

@xSAVIKx here's another one.

Another topic that I'd like to discuss is what would be the approach next? I'd like to remove entirely v1 package from v2 branch and start working towards a possible release? Since I think both v1 and v2 would be with the same feature set.

Also, what's your take on the protocol implementation? I took a look at go sdk for example, and they implemented the full Kafka protocol and integrated it with confluent-kafka-go lib for example, I assume same can be said about MQTT and other protocols. Do we plan to add support for this? Or, we want to keep the package light and allow users to define the protocol how they see fit?