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/ironsource/du.java

@@ -0,0 +1,9 @@
+package com.ironsource;
+
+import android.view.View;
+import android.widget.FrameLayout;
+
+/* loaded from: classes2.dex */
+public interface du {
+    void a(View view, FrameLayout.LayoutParams layoutParams);
+}