feat(services): add per-request timeout options

[h1065153539-create]

Summary

/claim #10

Adds shared per-request options for service methods so callers can override the client-level timeout on individual calls while keeping existing signatures backwards-compatible.

Changes

• Adds exported RequestOptions with timeoutMs and per-request retry support.
• Threads request options through access, membership, roles, and guild service calls.
• Keeps existing no-options method calls usable without changing request behavior.
• Updates the SDK guide and API reference with per-request timeout examples.

Testing

• npm.cmd run typecheck - passed
• npm.cmd run test:run - passed, 97 tests
• npm.cmd run build - passed
• npm.cmd run test:smoke - passed
• npm.cmd run lint - exited 0 with existing no-explicit-any warnings
• git diff --check - passed

Security / compatibility notes

• Per-request timeouts reuse the existing HttpClient abort handling and continue to surface GuildPassErrorCode.TIMEOUT.
• Existing call signatures remain valid; the new second argument is optional.
• No secrets, credentials, or sensitive request details are logged or exposed.