refactor: added zkevm and imx folders for sample app

Author: nattb8

sample/Assets/Scenes/AuthenticatedScene.unity

@@ -3530,7 +3530,7 @@ GameObject:
   - component: {fileID: 1192763473}
   - component: {fileID: 1192763474}
   m_Layer: 0
-  m_Name: Script
+  m_Name: AuthenticatedScript
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0

sample/Assets/Scripts/Helpers.meta

@@ -4,7 +4,6 @@
 using UnityEngine.UI;
 using UnityEngine.SceneManagement;
 using Immutable.Passport;
-using Immutable.Passport.Model;
 
 public class UnauthenticatedScript : MonoBehaviour
 {

sample/Assets/Scripts/SafeArea.cs sample/Assets/Scripts/Helpers/SafeArea.cssample/Assets/Scripts/SafeArea.cs renamed to sample/Assets/Scripts/Helpers/SafeArea.cs

@@ -44,6 +44,12 @@ public async void GetBalance()
             // Convert the hexadecimal balance to a BigInteger for decimal representation
             var balanceDec = BigInteger.Parse(balanceHex.Replace("0x", ""), NumberStyles.HexNumber);
 
+            // Ensure the number is positive
+            if (balanceDec < 0)
+            {
+                balanceDec = BigInteger.Parse("0" + balanceHex.Replace("0x", ""), NumberStyles.HexNumber);
+            }
+
             // Display both hexadecimal and decimal representations of the balance
             ShowOutput($"Balance:\nHex: {balanceHex}\nDec: {balanceDec}");
         }