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/ads/zzglm.java

@@ -0,0 +1,18 @@
+package com.google.android.gms.internal.ads;
+
+import java.util.Collections;
+import java.util.HashMap;
+
+/* loaded from: classes3.dex */
+public final class zzglm {
+    private HashMap zza = new HashMap();
+
+    public final zzglo zza() {
+        if (this.zza == null) {
+            throw new IllegalStateException("cannot call build() twice");
+        }
+        zzglo zzgloVar = new zzglo(Collections.unmodifiableMap(this.zza), null);
+        this.zza = null;
+        return zzgloVar;
+    }
+}