more monetizatios stuffz (#3002)

* uhhhhhhhhhhhhhhhhhhh yes

* uhhhhhhhhhhhhhhhhhhh yes

* ~~i love git~~

src/Discord.Net.Core/DiscordConfig.cs

@@ -265,6 +265,11 @@ namespace Discord
         /// </summary>
         public const int MaxEntitlementsPerBatch = 100;
 
+        /// <summary>
+        ///     Returns the maximum number of subscriptions that can be gotten per-batch.
+        /// </summary>
+        public const int MaxSubscriptionsPerBatch = 100;
+
         /// <summary>
         ///     Returns the maximum number of poll answer voters that can be gotten per-batch.
         /// </summary>