feat(info): add more missing Info API methods (#203)

Added support for additional Hyperliquid Info API endpoints:
- historical_orders: Retrieve user's historical orders with status
- user_non_funding_ledger_updates: Get ledger updates excluding funding
- portfolio: portfolio performance across time periods
- user_twap_slice_fills: TWAP order slice fills
- user_vault_equities: Vault investment positions
- user_role: User role and account type information
- user_rate_limit: API rate limit configuration and usage
- delegator_history: staking history