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/mbridge/msdk/dycreator/binding/c.java

@@ -0,0 +1,23 @@
+package com.mbridge.msdk.dycreator.binding;
+
+/* loaded from: classes4.dex */
+public final class c {
+    private static volatile c a;
+
+    private c() {
+    }
+
+    public static c a() {
+        if (a == null) {
+            synchronized (c.class) {
+                try {
+                    if (a == null) {
+                        a = new c();
+                    }
+                } finally {
+                }
+            }
+        }
+        return a;
+    }
+}