Add Discord APKTool decompilation (Smali source for modding)

- Imported from https://github.com/supermegamestre/Project-Real-Resurrection-3
- APKTool decompilation (Smali bytecode) for modding and rebuilding APK
- Supports both 32-bit (armeabi-v7a) and 64-bit (arm64-v8a) architectures
- Includes full Smali source, resources, and native libraries
- Ready to rebuild APK after modifications with apktool b command
- Added comprehensive README-apktool.md with modding guide

This branch complements the JADX branches:
- Use JADX (main/discord-community) to UNDERSTAND code (readable Java)
- Use APKTool (this branch) to MODIFY and REBUILD APK (editable Smali)

Total: 44,417 files, 538.51 MB Smali source code

smali_classes2/com/google/android/gms/common/api/GoogleApiClient$ConnectionCallbacks.smali

@@ -0,0 +1,26 @@
+.class public interface abstract Lcom/google/android/gms/common/api/GoogleApiClient$ConnectionCallbacks;
+.super Ljava/lang/Object;
+.source "SourceFile"
+
+# interfaces
+.implements Lcom/google/android/gms/common/api/internal/ConnectionCallbacks;
+
+
+# annotations
+.annotation system Ldalvik/annotation/EnclosingClass;
+    value = Lcom/google/android/gms/common/api/GoogleApiClient;
+.end annotation
+
+.annotation system Ldalvik/annotation/InnerClass;
+    accessFlags = 0x609
+    name = "ConnectionCallbacks"
+.end annotation
+
+.annotation runtime Ljava/lang/Deprecated;
+.end annotation
+
+
+# static fields
+.field public static final CAUSE_NETWORK_LOST:I = 0x2
+
+.field public static final CAUSE_SERVICE_DISCONNECTED:I = 0x1