add explorer endpoint to supply info on Smartnodes tab of wallet

[dexmar]

Friendly reminder about convo on Discord :)

The fields that are available on the Core Wallet, especially useful is Registered, Last Paid, and Next Payment but really all of the fields on that tab would be nice.

Thank you! :)

[ozereozere]

0xE4a6Cc9BAE370CA45030Ed2Bb79E19944CD21315

[ozereozere]

اريد استرجاع txt