Add did:hive method registration

DID method for per-agent identity on the Hive Civilization network — a
regulated agent-to-agent commerce layer settled in USDC on Base (EVM
chain ID 8453). Dual signature scheme: Ed25519 + ML-DSA-65 (NIST FIPS
204 + RFC 8032).

Specification: https://thehiveryiq.com/specs/did-hive/v1/
Maintainer: Steve Rotzin <steve@thehiveryiq.com>
Legal owner: Hive Civilization, Inc.

Author: srotzin

methods/hive.json

@@ -0,0 +1,9 @@
+{
+  "name": "hive",
+  "status": "registered",
+  "verifiableDataRegistry": "Hive Civilization resolver (Base, EVM chain ID 8453)",
+  "contactName": "Steve Rotzin",
+  "contactEmail": "steve@thehiveryiq.com",
+  "contactWebsite": "https://thehiveryiq.com",
+  "specification": "https://thehiveryiq.com/specs/did-hive/v1/"
+}