place_order
Place an order on Zerodha
Args:
tradingsymbol: Trading symbol (e.g., 'INFY')
exchange: Exchange (NSE, BSE, NFO, etc.)
transaction_type: BUY or SELL
quantity: Number of shares/units
product: Product code (CNC, MIS, NRML)
order_type: Order type (MARKET, LIMIT, SL, SL-M)
price: Price for LIMIT orders
trigger_price: Trigger price for SL orders
