feat: schemas for the v0.20 recovery requests list, verify response and recovery error codes #112

Auth API v0.20 (fells-code/seamless-auth-api#500) added shapes that are only declared in the API, so the React SDK (fells-code/seamless-auth-react#211) had to declare them locally:

• AccountRecoveryRequestSchema ({ id, channel, state, requestedAt, completesAt }) and AccountRecoveryRequestsResponseSchema ({ requests: AccountRecoveryRequest[] }), for GET /recovery/requests.
• AccountRecoveryVerifyResponseSchema: AccountRecoveryStatusSchema plus optional deliveries: AuthDelivery[].
• A recovery error code enum: invalid_recovery_code, recovery_notice_failed, account_recovery_disabled, recovery_not_found, recovery_not_ready, enrollment_required.

Then the API re-exports these instead of its local copies (src/schemas/accountRecovery.ts), and the SDK drops its local types.