lotus-fountain: make compatible with 0x addresses

[ognots]

Checklist

• This is not brainstorming ideas. If you have an idea you'd like to discuss, please open a new discussion on the lotus forum and select the category as Ideas.
• I have a specific, actionable, and well motivated feature request to propose.

Lotus component

• lotus daemon - chain sync
• lotus fvm/fevm - Lotus FVM and FEVM interactions
• lotus miner/worker - sealing
• lotus miner - proving(WindowPoSt/WinningPoSt)
• lotus JSON-RPC API
• lotus message management (mpool)
• Other

What is the motivation behind this feature request? Is your feature request related to a problem? Please describe.

make calibrationnet and other devnets FVM friendly, by making lotus-fountain compatible with 0x addresses.
this is necessary for the quick start tutorial to work as published

Describe the solution you'd like

Call EthAddressToFilecoinAddress when an 0x type address is detected in lotus-fountain's address field in the SENDING FUNDS section

Describe alternatives you've considered

No response

Additional context

No response

[ognots]

Relevant code https://github.com/filecoin-project/lotus/tree/master/cmd/lotus-fountain

[maciejwitowski]

@ognots do you plan to work on it in the next weeks?

[maciejwitowski]

Took a stab at implementing it #10784

[ognots]

Thanks @maciejwitowski this looks great. we'll still need a review from the lotus maintainers team. Let me know if you want me to escalate the priority of the review, this is a very important feature for the community