feat: signer /info api endpoint

[cylewitruk]

Description

Closes: #1017

Changes

• Adds a new /info endpoint to the signer's API (I'm thinking we reserve /health for connectivity checks and reporting connection errors, etc.).
• Adds getnetworkinfo and getblockchaininfo RPC methods to BitcoinInteract.
• Some other minor tweaks

Example response from devenv:

{
    "bitcoin": {
        "signer_tip": {
            "block_hash": "4829942fe1d8a876b9550080274ae43c7c9a83517cb19a2e7b08c4163fa6018b",
            "block_height": 237
        },
        "node_tip": {
            "block_hash": "4829942fe1d8a876b9550080274ae43c7c9a83517cb19a2e7b08c4163fa6018b",
            "block_height": 237
        },
        "node_chain": "regtest",
        "node_version": 250100,
        "node_subversion": "/Satoshi:25.1.0/"
    },
    "stacks": {
        "signer_tip": {
            "block_hash": "87abe90e746124ca9df157c7e4e1b0785c3cb6a712ce466dd630fecbb90b1dbd",
            "block_height": 47
        },
        "node_tip": {
            "block_hash": "87abe90e746124ca9df157c7e4e1b0785c3cb6a712ce466dd630fecbb90b1dbd",
            "block_height": 47
        },
        "node_bitcoin_block_height": 237,
        "node_version": "stacks-node 0.0.1 (:49777d3fd73a6dbb610be80c376b7d9389c9871a, debug build, linux [aarch64])"
    },
    "dkg": {
        "rounds": 1,
        "current_aggregate_key": "03cffc8638c02dde18c99a84ebf25c6fce3faf7843ea67152a69b6dfbca80c35cc",
        "contract_aggregate_key": "03cffc8638c02dde18c99a84ebf25c6fce3faf7843ea67152a69b6dfbca80c35cc"
    },
    "config": {
        "network": "regtest",
        "deployer": "SN3R84XZYA63QS28932XQF3G1J8R9PC3W76P9CSQS",
        "bootstrap_signatures_required": 2,
        "bitcoin_processing_delay": 3,
        "context_window": 1000,
        "signer_round_max_duration": 5,
        "bitcoin_presign_request_max_duration": 5,
        "dkg_max_duration": 5,
        "sbtc_bitcoin_start_height": null,
        "dkg_begin_pause": 1,
        "max_deposits_per_bitcoin_block": 25,
        "dkg_min_bitcoin_block_height": null,
        "dkg_target_rounds": 1
    },
    "build_info": {
        "rust_version": "rustc 1.84.0 (9fc6b4312 2025-01-07)",
        "git_revision": "add5a8868d5f5d1df9b58e369e8032cc65b79c3d",
        "target_arch": "aarch64",
        "target_env_abi": null
    },
    "timestamp": "2025-01-24 11:15:22.802073 +00:00:00"
}

Values which are not available (i.e. either missing or an error occurred) are returned as null, my thinking is that this should report as much information as possible and be infallible, and we use a /health endpoint for having simple db/bitcoin/stacks connectivity checks and report errors.

Testing Information

Added additional unit tests and tested pretty extensively against devenv.

Checklist:

• I have performed a self-review of my code
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[djordon]

Took a quick look, will have to circle back.

[cylewitruk]

Note: I added a config section as well which dumps some of the signer config values in add5a88.

[djordon]

Looks good. Left one style nit.