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/common/internal/zzj.java

@@ -0,0 +1,20 @@
+package com.google.android.gms.common.internal;
+
+import com.google.android.gms.common.util.concurrent.NamedThreadFactory;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+/* loaded from: classes2.dex */
+final class zzj {
+    static final ExecutorService zza;
+
+    static {
+        com.google.android.gms.internal.common.zzh.zza();
+        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 1, 60L, TimeUnit.SECONDS, new LinkedBlockingQueue(), new NamedThreadFactory("CallbackExecutor"));
+        threadPoolExecutor.allowCoreThreadTimeOut(true);
+        zza = Executors.unconfigurableExecutorService(threadPoolExecutor);
+    }
+}