Ensure multi-network is operational

[okwme]

trafficstars

At a minimum we should be expecting the game to run on 2 exclusive networks, meaning their records to not interact. These are testnet and mainnet.

Still possible we want to consider deploying to multiple mainnets. This would also mean running multiple testnets. If we go this route we may want to mix all records from all mainnets, and mix all records from all testnets, but still keep mainnets separate from testnets (Kind of funny to include testnets for top scores as it's just a really cheap blockchain and the "prized" could still be awarded on mainnets, would avoid for now tho).

Maybe a good approach i that all queries are per network but then it's possible to make a combined query which just combines the original queries?

In the front end I would expect to store an ENV car for testnet API endpoint and one for mainnet API endpoint.