Introduce Rusk Versioning

[fed-franz]

Summary

To properly enable a network, where nodes can have different versions of the node, we need to integrate a version labeling system which entails both releasing binaries tied to a specific commit (see tags) and handling data and peers using older (or newer) versions of the protocol.

Also see dusk-network/dips#6

[autholykos]

This is pretty important to have so that we can manage versions and avoid unduly slashing caused by invalid blocks that are simply following an older version of the protocol.

[fed-franz]

The main thing to introduce is a Version field in the Consensus messages

[fed-franz]

Also we should release the protocol as version 1.0.0