Summary

Adds the Tron namespace to the Trust Wallet provider, wiring the extension's
TronLink-compatible instance (window.trustwallet.tronLink) into the hub with
connect / disconnect / eager-connect, account-change tracking, and signing.

Changes

• New actions/tron.ts, builders/tron.ts, namespaces/tron.ts following the
  actions/builders split; Tron added to provider metadata and registration

• Account changes subscribe to the instance's own accountsChanged event
  (string[] of base58 addresses; empty array → disconnect)

• Custom CustomTronSigner extends DefaultTronSigner and strips the extra
  type field Rango puts inside raw_data.contract[*].parameter.value, which
  Trust's strict wallet-core parser rejects (signature unaffected — it covers
  txID/raw_data_hex)

• Message-less user rejection ({code: 4001}) mapped to
  "User rejected the request" with the code kept on the error

• canEagerConnect returns false (never throws) when the late-injected Tron
  shim isn't ready — auto-connect runs independently of the installed flag

• Docs: support matrix and provider readme notes (switch-account
  reload caveat, auto-connect limitation)

  How tested

Manually against the Trust Wallet browser extension: connect, user rejection
(correct message, no masked listener error), account-switch/disconnect events,
and a real swap transaction that drove the wallet-core parser fix. Package
build, eslint, and ts-check pass.

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• Implemented a user interface (UI) change, referencing our Figma design to ensure pixel-perfect precision.