Get latest node version from Stargate

[Adam K Dean]

For testnet, this would be: https://stargate.test.network/services/<node>
For mainnet, this will be: https://stargate.edge.network/services/<node>

Currently, the output will look like this, but more fields may be added at a later date:

{
  "name": "stargate",
  "version": "0.1.0-24"
}