feat(tron): add TRC20 approval resource sponsoring extension

[boboliu-1010]

Description

Adds the TRC20 Approval Resource Sponsoring extension on top of the released v1.1.0 baseline, targeting the v1.2.0 release of the TypeScript Extensions and TRON packages.

This PR:

• carries forward the x402 v2 specification migration from docs: migrate and update x402 v2 specifications #81;
• defines the TRC20 approval resource sponsoring protocol and wire format;
• implements client, server, and facilitator extension hooks;
• validates the exact signed approval transaction before broadcast;
• delegates and reclaims TRON Energy and Bandwidth around approval;
• requires an intent-aware Resource Owner signer, a non-owner Active Permission, and strict local JSON/protobuf validation before and after signing;
• durably recovers every non-terminal sponsorship state and only replaces an Undelegate after its original txID is confirmed failed;
• submits Undelegate recovery debt before continuing Permit2 settlement, while confirmation and capacity release run asynchronously;
• adds unit, integration, and repeatable Nile end-to-end examples;
• adds changesets for minor releases of @bankofai/x402-extensions and @bankofai/x402-tron.

Tests

• Core: 649 tests passed
• Extensions: 531 tests passed
• TRON: 215 tests passed
• Core, Extensions, and TRON CJS/ESM/DTS builds passed
• Facilitator example TypeScript check passed
• TRON lint and formatting checks passed
• Nile fresh-wallet end-to-end flow passed: activation, funding, verification, resource delegation, approval, Permit2 payment settlement, asynchronous recovery reconciliation, and zero remaining delegation
• Nile settlement transaction: c5b08dbb68db496a97314a4eb82c3e7a53429ebed9d3182f424c6f0420bfd84c

Checklist

• I have formatted and linted my code
• All new and existing tests pass
• My commits are signed (required for merge)