Isolated API definitions to their own library

src/Discord.Net.WebSocket/API/Gateway/StatusUpdateParams.cs

@@ -1,18 +0,0 @@
-#pragma warning disable CS1591
-using Newtonsoft.Json;
-
-namespace Discord.API.Gateway
-{
-    [JsonObject(MemberSerialization = MemberSerialization.OptIn)]
-    public class StatusUpdateParams
-    {
-        [JsonProperty("status")]
-        public UserStatus Status { get; set; }
-        [JsonProperty("since"), Int53]
-        public long? IdleSince { get; set; }
-        [JsonProperty("afk")]
-        public bool IsAFK { get; set; }
-        [JsonProperty("game")]
-        public Game Game { get; set; }
-    }
-}