Add progress callbacks to Il2CppBinary and Il2CppInspector

Il2CppInspector.Common/IL2CPP/Metadata.cs

@@ -45,7 +45,7 @@ namespace Il2CppInspector
 
         public Dictionary<int, string> Strings { get; } = new Dictionary<int, string>();
 
-        public Metadata(Stream stream) : base(stream)
+        public Metadata(Stream stream, EventHandler<string> statusCallback = null) : base(stream)
         {
             // Read magic bytes
             if (ReadUInt32() != 0xFAB11BAF) {
@@ -170,6 +170,9 @@ namespace Il2CppInspector
             // Only do this if we need to because it's very slow
             if (stringOffsets.Except(Strings.Keys).Any()) {
 
+                Console.WriteLine("Decrypting strings...");
+                statusCallback?.Invoke(this, "Decrypting strings");
+
                 // Start again
                 Strings.Clear();
                 Position = Header.stringOffset;