feat: add dashevo namespace for Dash Platform WalletConnect support

[PastaPastaPasta]

Summary

Adds the dashevo namespace for Dash Platform, the identity and data contract layer built on top of the Dash payment network.

Dash Platform uses Tenderdash (a Dash fork of Tendermint) for consensus and an identity-based account model — fundamentally different from Dash Core, which already has a listing under the bip122 namespace. This requires a separate namespace because the consensus engine, account model, state model, and transport are all incompatible with bip122.

Files

• dashevo/README.md — Namespace overview, rationale for separation from bip122, governance
• dashevo/caip2.md — Chain identification using Tenderdash chain_id strings (evo1 for mainnet, dash-testnet-51 for testnet)
• dashevo/caip10.md — Account identification using base58-encoded 256-bit Platform identity IDs

Key design decisions

• Chain IDs follow the Tendermint/Cosmos pattern (string identifiers from genesis config), regex: [-a-zA-Z0-9]{1,32}
• Identity IDs are sha256(sha256(funding_outpoint)), base58-encoded (no checksum), 43-44 characters, regex: [1-9A-HJ-NP-Za-km-z]{43,44}
• Resolution mechanics document Tenderdash RPC and DAPI endpoints for verification

Related

• Dash Core WalletConnect listing: walletconnect-monorepo#7141 (uses bip122)
• Dash Platform documentation