This function performs the main logic of opening a trade.
Calculates the opening price, take profit levels and stop loss based on symbol information and parameters provided by the user.
Prepare a trade request (MqlTradeRequest) with the necessary information, such as symbol, volume, order type, deviation, comment, magic number, etc.
Call the OrderSend function to send the operation request and get the result.
SetTypeFillingBySymbol function:
Determines the order fill type (Fill or Kill, Immediate or Cancel, or Return) based on the symbol's filling policy.
GetMinTradeLevel function:
Calculates the minimum operating level based on the freeze level and the symbol stops level.
Adjusts the minimum level to make sure it is within certain limits and returns the result.
