Feat/pause until dhtops synced

[mattyg]

Resolves #167

• Implements a utility function pauseUntilDhtEqual that takes an array of Players and a DnaHash. The function returns a promise that resolves when all players have identical arrays of integrated DhtOps in their conductor state.
• Basic test for function

I don't love the function name - I assume this will be used a lot so the simpler, shorter and clearer the better. Feel free to change it to your preference.

[harlantwood]

Awesome! On names, suggestions:

• waitForDhtSync
• syncDht
• syncState

[jost-s]

Brilliant, thank you @mattyg!

I'd go with awaitDhtIntegration or awaitDhtSync.