Add Discord community version (64-bit only)

- Added realracing3-community.apk (71.57 MB)
- Removed 32-bit support (armeabi-v7a)
- Only includes arm64-v8a libraries
- Decompiled source code included
- Added README-community.md with analysis

decompiled-community/sources/com/google/android/gms/internal/auth/zzk.java

@@ -0,0 +1,12 @@
+package com.google.android.gms.internal.auth;
+
+import android.os.Bundle;
+import android.os.IInterface;
+import android.os.RemoteException;
+import androidx.annotation.Nullable;
+import com.google.android.gms.common.api.Status;
+
+/* loaded from: classes3.dex */
+public interface zzk extends IInterface {
+    void zzb(Status status, @Nullable Bundle bundle) throws RemoteException;
+}