Add Torch client mod. Currently supports dialogs and notifications.

Add dialog output to !longhelp
Add !notify command
Silently inserts mod into session when client connects, server admins don't need to do anything to enable it.

Torch.Mod/Messages/DialogMessage.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ProtoBuf;
+using Sandbox.ModAPI;
+
+namespace Torch.Mod.Messages
+{
+    /// Dialogs are structured as follows
+    /// 
+    /// _____________________________________
+    /// |            Title                   |
+    /// --------------------------------------
+    /// |          Prefix Subtitle           |
+    /// --------------------------------------
+    /// |  ________________________________  |
+    /// |  |         Content               | |
+    /// |  --------------------------------- |
+    /// |            ____________            |
+    /// |           | ButtonText |           |
+    /// |           --------------           |
+    /// --------------------------------------
+    /// 
+    /// Button has a callback on click option, 
+    /// but can't serialize that, so ¯\_(ツ)_/¯
+    [ProtoContract]
+    public class DialogMessage : MessageBase
+    {
+        [ProtoMember(201)]
+        public string Title;
+        [ProtoMember(202)]
+        public string Subtitle;
+        [ProtoMember(203)]
+        public string Prefix;
+        [ProtoMember(204)]
+        public string Content;
+        [ProtoMember(205)]
+        public string ButtonText;
+
+        public DialogMessage()
+        { }
+
+        public DialogMessage(string title, string subtitle, string content)
+        {
+            Title = title;
+            Subtitle = subtitle;
+            Content = content;
+            Prefix = String.Empty;
+        }
+
+        public DialogMessage(string title = null, string prefix = null, string subtitle = null, string content = null, string buttonText = null)
+        {
+            Title = title;
+            Subtitle = subtitle;
+            Prefix = prefix ?? String.Empty;
+            Content = content;
+            ButtonText = buttonText;
+        }
+
+        public override void ProcessClient()
+        {
+            MyAPIGateway.Utilities.ShowMissionScreen(Title, Prefix, Subtitle, Content, null, ButtonText);
+        }
+
+        public override void ProcessServer()
+        {
+            throw new Exception();
+        }
+    }
+}

Torch.Mod/Messages/MessageBase.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ProtoBuf;
+
+namespace Torch.Mod.Messages
+{
+    #region Includes
+    [ProtoInclude(1, typeof(DialogMessage))]
+    [ProtoInclude(2, typeof(NotificationMessage))]
+    #endregion
+
+    [ProtoContract]
+    public abstract class MessageBase
+    {
+        [ProtoMember(101)]
+        public ulong SenderId;
+
+        public abstract void ProcessClient();
+        public abstract void ProcessServer();
+
+        //members below not serialized, they're just metadata about the intended target(s) of this message
+        internal MessageTarget TargetType;
+        internal ulong Target;
+        internal ulong[] Ignore;
+        internal byte[] CompressedData;
+    }
+
+    public enum MessageTarget
+    {
+        /// <summary>
+        /// Send to Target
+        /// </summary>
+        Single,
+        /// <summary>
+        /// Send to Server
+        /// </summary>
+        Server,
+        /// <summary>
+        /// Send to all Clients (only valid from server)
+        /// </summary>
+        AllClients,
+        /// <summary>
+        /// Send to all except those steam ID listed in Ignore
+        /// </summary>
+        AllExcept,
+    }
+}

Torch.Mod/Messages/NotificationMessage.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using ProtoBuf;
+using Sandbox.ModAPI;
+
+namespace Torch.Mod.Messages
+{
+    [ProtoContract]
+    public class NotificationMessage : MessageBase
+    {
+        [ProtoMember(201)]
+        public string Message;
+        [ProtoMember(202)]
+        public string Font;
+        [ProtoMember(203)]
+        public int DisappearTimeMs;
+
+        public NotificationMessage()
+        { }
+
+        public NotificationMessage(string message, int disappearTimeMs, string font)
+        {
+            Message = message;
+            DisappearTimeMs = disappearTimeMs;
+            Font = font;
+        }
+
+        public override void ProcessClient()
+        {
+            MyAPIGateway.Utilities.ShowNotification(Message, DisappearTimeMs, Font);
+        }
+
+        public override void ProcessServer()
+        {
+            throw new Exception();
+        }
+    }
+}