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/util/Strings.java

@@ -0,0 +1,29 @@
+package com.google.android.gms.common.util;
+
+import android.text.TextUtils;
+import androidx.annotation.Nullable;
+import com.google.android.gms.common.annotation.KeepForSdk;
+import java.util.regex.Pattern;
+
+@KeepForSdk
+/* loaded from: classes2.dex */
+public class Strings {
+    private static final Pattern zza = Pattern.compile("\\$\\{(.*?)\\}");
+
+    private Strings() {
+    }
+
+    @Nullable
+    @KeepForSdk
+    public static String emptyToNull(@Nullable String str) {
+        if (TextUtils.isEmpty(str)) {
+            return null;
+        }
+        return str;
+    }
+
+    @KeepForSdk
+    public static boolean isEmptyOrWhitespace(@Nullable String str) {
+        return str == null || str.trim().isEmpty();
+    }
+}