Add basic shelbynet support

[zjma]

Summary

• add shelbynet (chain_id 114) as a supported Aptos RPC target for network-node verification
• add --aptos-shelbynet-api / --aptos-shelbynet-apikey plus ACE_CONFIG_JSON and env-key support
• thread shelbynet through CLI node onboarding, Cloud Run args/secrets, deployment diff parsing, loadtest defaults, and deployment-new network selection

Notes

• This is only the base runtime/CLI support needed before deploying ACE to shelbynet.
• SDK known deployment is intentionally not added yet; it needs the real shelbynet ACE contract address and IBE/VRF keypair IDs after deployment.

Test plan

• pnpm --filter ace-cli typecheck
• cargo test -p network-node --no-fail-fast