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_classes3/com/google/protobuf/ByteString$SystemByteArrayCopier.smali

@@ -0,0 +1,53 @@
+.class public final Lcom/google/protobuf/ByteString$SystemByteArrayCopier;
+.super Ljava/lang/Object;
+.source "SourceFile"
+
+# interfaces
+.implements Lcom/google/protobuf/ByteString$ByteArrayCopier;
+
+
+# annotations
+.annotation system Ldalvik/annotation/EnclosingClass;
+    value = Lcom/google/protobuf/ByteString;
+.end annotation
+
+.annotation system Ldalvik/annotation/InnerClass;
+    accessFlags = 0x19
+    name = "SystemByteArrayCopier"
+.end annotation
+
+
+# direct methods
+.method private constructor <init>()V
+    .locals 0
+
+    .line 114
+    invoke-direct {p0}, Ljava/lang/Object;-><init>()V
+
+    return-void
+.end method
+
+.method public synthetic constructor <init>(Lcom/google/protobuf/ByteString$1;)V
+    .locals 0
+
+    .line 114
+    invoke-direct {p0}, Lcom/google/protobuf/ByteString$SystemByteArrayCopier;-><init>()V
+
+    return-void
+.end method
+
+
+# virtual methods
+.method public copyFrom([BII)[B
+    .locals 2
+
+    .line 117
+    new-array v0, p3, [B
+
+    const/4 v1, 0x0
+
+    .line 118
+    invoke-static {p1, p2, v0, v1, p3}, Ljava/lang/System;->arraycopy(Ljava/lang/Object;ILjava/lang/Object;II)V
+
+    return-object v0
+.end method