[Feature Request] Add ability to see epochs and withdrawal state similar to https://beaconcha.in/

[crypto-date]

I recently went the process of shutting down a minipool and found it confusing as far as the states returns from rocketpool minipool close and rocketpool minipool exit. In both cases, you are waiting for a certain epoch outside of your control for the next step. https://beaconcha.in/ does a nice job showing your current status, but if I didn't know about that tool, I'd have been very confused and distraught about state. Once I understood that I could call exit until a certain epoch and once I understood that I couldn't call close and that my funds would automatically be returned to the smart contract, it was all good. If the CLI could report this info that'd be great, or at a minimum, refer to https://beaconcha.in/ as a hyperlink, like it does with TX status and etherscan.

BTW, great work on the project -- big fan!