Added StrippingLevelCheck Build Preprocessor (#1004)

Co-authored-by: = <=>
Co-authored-by: Nikola Garabandic <kantagara@gmail.com>

Author: oleksandrchainsafe

Packages/io.chainsafe.web3-unity/Editor/StrippingLevelCheckBuildPreprocessor.cs

@@ -0,0 +1,31 @@
+using UnityEditor;
+using UnityEditor.Build;
+using UnityEditor.Build.Reporting;
+
+public class StrippingLevelCheckBuildPreprocessor : IPreprocessBuildWithReport
+{
+    private const string dialogMessage = "Some of the components of the ChainSafe Gaming SDK might not behave properly when stripping level is stricter than Minimal.\n\nDo you want to switch the stripping level setting to Minimal?";
+    private const string dialogTitle = "Set Stripping Level to Minimal";
+    
+    public int callbackOrder { get; }
+    
+    public void OnPreprocessBuild(BuildReport report)
+    {
+        var buildGroup = report.summary.platformGroup;
+        
+        var strippingLevel = PlayerSettings.GetManagedStrippingLevel(buildGroup);
+        
+        if (strippingLevel == ManagedStrippingLevel.Disabled) return;
+        if (strippingLevel == ManagedStrippingLevel.Minimal) return;
+
+        var switchToMinimal = EditorUtility.DisplayDialog(
+            dialogTitle, 
+            dialogMessage, 
+            "Switch to Minimal",
+            "Ignore");
+        
+        if (!switchToMinimal) return;
+        
+        PlayerSettings.SetManagedStrippingLevel(buildGroup, ManagedStrippingLevel.Minimal);
+    }
+}