Remove RPC from main distribution (#925)

experiment/Discord.Net.Rpc/Commands/RpcCommandContext.cs

@@ -0,0 +1,29 @@
+using Discord.Rpc;
+
+namespace Discord.Commands
+{
+    public class RpcCommandContext : ICommandContext
+    {
+        public DiscordRpcClient Client { get; }
+        public IMessageChannel Channel { get; }
+        public RpcUser User { get; }
+        public RpcUserMessage Message { get; }
+
+        public bool IsPrivate => Channel is IPrivateChannel;
+
+        public RpcCommandContext(DiscordRpcClient client, RpcUserMessage msg)
+        {
+            Client = client;
+            Channel = msg.Channel;
+            User = msg.Author;
+            Message = msg;
+        }
+
+        //ICommandContext
+        IDiscordClient ICommandContext.Client => Client;
+        IGuild ICommandContext.Guild => null;
+        IMessageChannel ICommandContext.Channel => Channel;
+        IUser ICommandContext.User => User;
+        IUserMessage ICommandContext.Message => Message;
+    }
+}