feat: Added total gas calculator func

logic/lib/src/domain/utils/mxc_gas.dart

@@ -1,3 +1,5 @@
+import 'dart:math';
+
 import 'package:mxc_logic/mxc_logic.dart';
 import 'package:web3dart/web3dart.dart';
 
@@ -16,6 +18,7 @@ class MXCGas {
     return maxFeePerGas;
   }
 
+  ///  The returned value is in Wei.
   static double calculateMaxFeePerGasDouble(double gasPrice) {
     final estimatedGasFeeAsDouble = gasPrice * Config.priority;
 
@@ -25,6 +28,28 @@ class MXCGas {
     return maxFeePerGas.toDouble();
   }
 
+  /// calculates total base fee based on base gas price & gas limit,
+  ///  The returned value is in Eth.
+  static double calculateTotalFee(double gasPrice, int gasLimit) {
+    double gasFee = gasPrice * gasLimit;
+    gasFee = gasFee / pow(10, 18);
+    return gasFee;
+  }
+
+  /// calculates total max fee based on base gas price & gas limit,
+  /// The returned value is in Eth
+  static double calculateTotalMaxFee(double gasPrice, int gasLimit) {
+    final estimatedGasFeeAsDouble = gasPrice * gasLimit * Config.priority;
+
+    BigInt maxFeeBigInt = BigInt.from(estimatedGasFeeAsDouble) +
+        Config.maxPriorityFeePerGas.getInWei;
+
+    double maxFee = maxFeeBigInt.toDouble();
+    maxFee = maxFee / pow(10, 18);
+
+    return maxFee;
+  }
+
   /// This functions adds to the fee by multiplying the gas price by the Config.extraGasPercentage.
   static double addExtraFeeForTxReplacement(double gasPrice) {
     final gasPriceDouble = gasPrice * Config.extraGasPercentage;