Add support for viewing unpaid NiceHash balance.

[Former user]

It would be great to be able to view my unpaid NH balance as this is usually more pertinent/realtime than the wallet balance.

This could also allow last 24hr earning info.

[James Dimitrov]

I'll check and see if I can pull that from the API

[James Dimitrov]

I wish I could but the current version of the NiceHash API does not support this feature. Perhaps if they added it in the future

[Rockett0]

For external wallets, the current api does show the unpaid balance per coin. IE Neoscrypt .0203433

https://api.nicehash.com/api?method=stats.provider.ex&addr=

It also shows the money they owe external wallets. from the hack. "attack_amount"