feat(dashmate): platform status should show latest platform block seen by other nodes

[strophy]

Expected Behavior

It would be nice if dashmate status platform would indicate if the current block matches (or is near) the highest block seen on the network.

Current Behavior

A node on testnet got stuck on 5027, but the rest of the chain progressed. We should add a field to indicate that other nodes are e.g. on 6040, and give an indication that this node might be stuck by changing the colour red.

Possible Solution

Inspect TD voting traffic and if other block numbers being voted on are at a significantly greater height than our node.

Alternatives Considered

Additional Context

[shumkov]

@pshenmic what do you think about it?