add sharing percentage adjustment to base fee

Author: smartprogrammer93

src/Nethermind/Nethermind.Taiko/Config/ISurgeConfig.cs

@@ -33,4 +33,7 @@ public interface ISurgeConfig : IConfig
 
     [ConfigItem(Description = "The address of the TaikoInbox contract.", DefaultValue = "null")]
     string? TaikoInboxAddress { get; set; }
+
+    [ConfigItem(Description = "Percentage of the base fee that is shared with the L2 batch submitter.", DefaultValue = "75")]
+    int SharingPercentage { get; set; }
 }

src/Nethermind/Nethermind.Taiko/Config/SurgeConfig.cs

@@ -14,4 +14,5 @@ public class SurgeConfig : ISurgeConfig
     public int FeeHistoryBlockCount { get; set; } = 200;
     public int L2GasUsageWindowSize { get; set; } = 20;
     public string? TaikoInboxAddress { get; set; }
+    public int SharingPercentage { get; set; } = 75;
 }

src/Nethermind/Nethermind.Taiko/Rpc/SurgeGasPriceOracle.cs

@@ -94,13 +94,17 @@ public override async ValueTask<UInt256> GetGasPriceEstimate()
 
         UInt256 gasPriceEstimate = (minProposingCost + proofPostingCost + _surgeConfig.ProvingCostPerL2Batch) /
                                    Math.Max(averageGasUsage, _surgeConfig.L2GasPerL2Batch);
-        _gasPriceEstimation.Set(headBlockHash, gasPriceEstimate);
+        UInt256 adjustedGasPriceEstimate = gasPriceEstimate * 100 / (UInt256)_surgeConfig.SharingPercentage;
+        _gasPriceEstimation.Set(headBlockHash, adjustedGasPriceEstimate);
 
-        if (_logger.IsTrace) _logger.Trace($"[{ClassName}] Calculated new gas price estimate: {gasPriceEstimate}, " +
-            $"L1 Base Fee: {l1BaseFee}, L1 Blob Base Fee: {l1BlobBaseFee}, L1 Average Base Fee: {l1AverageBaseFee}, " +
-            $"Average Gas Usage: {averageGasUsage}");
+        if (_logger.IsTrace)
+        {
+            _logger.Trace($"[{ClassName}] Calculated new gas price estimate: {adjustedGasPriceEstimate}, " +
+                          $"L1 Base Fee: {l1BaseFee}, L1 Blob Base Fee: {l1BlobBaseFee}, L1 Average Base Fee: {l1AverageBaseFee}, " +
+                          $"Average Gas Usage: {averageGasUsage}, Adjusted with a sharing percentage of {_surgeConfig.SharingPercentage}");
+        }
 
-        return gasPriceEstimate;
+        return adjustedGasPriceEstimate;
     }
 
     private async ValueTask<L1FeeHistoryResults?> GetL1FeeHistory()