feat(faucet): fetch maid pubkeys to enable encryption of distributions

[iancoleman]

Faucet will distribute tokens to existing maid holders (from the snapshot).

Each distribution will be encrypted using the maid public key, so only the maid owner can decrypt their distribution.

This feature enables an initial set of public keys to be used for the initial distribution. This means the live faucet will hold less tokens at start, since those distributions will be spent to maid owners when the faucet starts.

This doesn't create the distributions, but is an essential step toward it.

Description

Summary generated by Reviewpad on 19 Jan 24 02:03 UTC

This pull request includes the following changes:

1. Cargo.toml - Added a new dependency on bitcoin version 0.31.0.
2. faucet_server.rs - Various changes including imports, function additions/updates, and logging statements. Detailed changes provided in the previous message.
3. Cargo.lock - Multiple changes including package additions and updates. Detailed changes provided in the previous message.

Please review the above changes and let me know if you need further assistance.

[reviewpad]

Reviewpad Report

‼️ Errors

• Unconventional commit detected: 'Merge branch 'main' into faucet_pubkeys' (bb669de)
• Unconventional commit detected: 'Merge branch 'main' into faucet_pubkeys' (d689ad5)
• Unconventional commit detected: 'Merge branch 'main' into faucet_pubkeys' (fdc5fcb)

⚠️ Warnings

• Please rebase your pull request on the latest changes

[iancoleman]

@joshuef I'm happy with where this is at, all the comments have been addressed. Once it's in I'll start on the next step of the process.

[joshuef]

Aye, i was planning on holding this off until quic had been tested, but we can roll it all in together as the deployer is tripping us up the last week, so I won't hold you up here any longer 👍