feat(sdk-core): add dynamic reserve swap protocol clients

[joshglogau]

Summary

• Aligns the typed sysio.chains discovery client with the shared sysio contract proxy.
• Adds a normalized sysio.tokens client for token metadata, chain deployments, and active asset discovery.
• Adds a sysio.uwrit client for configuration, queues, underwriting requests, and WIRE-origin swap submission.
• Exposes the canonical WIRE route sentinel and typed lifecycle records for downstream integrations.
• Documents the reserve-swap integration boundaries and public SDK surface.

Why

The next Hub swap flow must derive assets, routes, quotes, and settlement state from deployed system contracts instead of hardcoded pool catalogs. These domain facades keep ABI preparation, protocol typing, and normalization in SDK Core while allowing applications to own their product UX.

Integration model

• sysio.tokens and sysio.reserv build the active route graph and quotes.
• External-chain escrow transactions remain in the appropriate chain SDK.
• WIRE-origin requests and underwriting lifecycle reads use sysio.uwrit.
• The WIRE endpoint is represented by the protocol's WIRE/WIRE/PRIMARY sentinel.

Validation

• SDK Core TypeScript compilation passed.
• 11 focused Jest tests passed across chains, tokens, and underwriting.
• Focused ESLint checks passed.

Dependency note

This PR is intentionally stacked on refactor/sysio-contract-proxy so the new clients use the shared proxy implementation. Retarget it to master after the proxy PR lands.