Improvement: Implement a "polling" poll

[CryptoPascal31]

kda-tool should have a "polling" poll command.

• Maybe by creating new command
• Or maybe by adding a parameter to the poll command.

This command should poll the node (every x seconds) and return only when the transaction has been mined (with failure or success). In fact exactly how Chainweaver actually does.

A timeout is although necessary.

[mightybyte]

This is pretty trivial to achieve in a shell script with a loop and delay.