Added RPC channel and guild entities, Get and Select methods

src/Discord.Net.Rpc/Entities/Users/RpcGuildUser.cs

@@ -0,0 +1,29 @@
+using Model = Discord.API.Rpc.GuildMember;
+
+namespace Discord.Rpc
+{
+    public class RpcGuildUser : RpcUser
+    {
+        private UserStatus _status;
+
+        public override UserStatus Status => _status;
+        //public object Acitivity { get; private set; }
+
+        internal RpcGuildUser(DiscordRpcClient discord, ulong id)
+            : base(discord, id)
+        {
+        }
+        internal static RpcGuildUser Create(DiscordRpcClient discord, Model model)
+        {
+            var entity = new RpcGuildUser(discord, model.User.Id);
+            entity.Update(model);
+            return entity;
+        }
+        internal void Update(Model model)
+        {
+            base.Update(model.User);
+            _status = model.Status;
+            //Activity = model.Activity;
+        }
+    }
+}

src/Discord.Net.Rpc/Entities/Users/RpcUser.cs

@@ -6,7 +6,7 @@ using Model = Discord.API.User;
 namespace Discord.Rpc
 {
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
-    public class RpcUser : RpcEntity<ulong>, IUser, IUpdateable
+    public class RpcUser : RpcEntity<ulong>, IUser
     {
         public bool IsBot { get; private set; }
         public string Username { get; private set; }
@@ -40,12 +40,6 @@ namespace Discord.Rpc
             if (model.Username.IsSpecified)
                 Username = model.Username.Value;
         }
-        
-        public virtual async Task UpdateAsync(RequestOptions options = null)
-        {
-            var model = await Discord.ApiClient.GetUserAsync(Id, options);
-            Update(model);
-        }
 
         public Task<RestDMChannel> CreateDMChannelAsync(RequestOptions options = null)
             => UserHelper.CreateDMChannelAsync(this, Discord, options);

src/Discord.Net.Rpc/Entities/Users/RpcVoiceState.cs

@@ -1,6 +1,6 @@
 using System;
 using System.Diagnostics;
-using Model = Discord.API.Rpc.VoiceStateEvent;
+using Model = Discord.API.Rpc.ExtendedVoiceState;
 
 namespace Discord.Rpc
 {