Remove RPC from main distribution (#925)

experiment/Discord.Net.Rpc/Entities/UserVoiceProperties.cs

@@ -0,0 +1,18 @@
+#pragma warning disable CS1591
+
+using Newtonsoft.Json;
+
+namespace Discord.Rpc
+{
+    public class UserVoiceProperties
+    {
+        [JsonProperty("userId")]
+        internal ulong UserId { get; set; }
+        [JsonProperty("pan")]
+        public Optional<Pan> Pan { get; set; }
+        [JsonProperty("volume")]
+        public Optional<int> Volume { get; set; }
+        [JsonProperty("mute")]
+        public Optional<bool> Mute { get; set; }
+    }
+}