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/measurement/zzkl.java

@@ -0,0 +1,9 @@
+package com.google.android.gms.internal.measurement;
+
+/* loaded from: classes3.dex */
+final class zzkl<K, V> {
+    public final zzmo zza;
+    public final K zzb;
+    public final zzmo zzc;
+    public final V zzd;
+}