add loop or not choice for mine

[Julymycin]

Add an optional Boolean argument --loopminer to mine command. When set to false, the miner will exit after completing one mining process.

[tonton-sol]

What is the purpose of this?

[Julymycin]

As for me, I'd like to randomly select rpc from my rpc node pools and set a flexible priority fee for each mining process. This arg would help customize the mining.

[tonton-sol]

That’s smart, I would change it to an optional flag with a long name ‘—single’ and short name ‘-s’. Having to pass a bool is less optimal.