Paper and pen (#582)

* A very basic paper and pen implementation

* Removes SharedWriteComponent

* Update ContentNetIDs.cs

Content.Shared/GameObjects/Components/SharedPaperComponent.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Net.Mime;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components.UserInterface;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components
+{
+    public class SharedPaperComponent : Component
+    {
+        public override string Name => "Paper";
+
+        [Serializable, NetSerializable]
+        public class PaperBoundUserInterfaceState : BoundUserInterfaceState
+        {
+            public readonly string Text;
+            public readonly PaperAction Mode;
+
+            public PaperBoundUserInterfaceState(string text, PaperAction mode = PaperAction.Read)
+            {
+                Text = text;
+                Mode = mode;
+            }
+        }
+
+        [Serializable, NetSerializable]
+        public class PaperActionMessage : BoundUserInterfaceMessage
+        {
+            public readonly PaperAction Action;
+            public PaperActionMessage(PaperAction action)
+            {
+                Action = action;
+            }
+        }
+
+        [Serializable, NetSerializable]
+        public class PaperInputText : BoundUserInterfaceMessage
+        {
+            public readonly string Text;
+
+            public PaperInputText(string text)
+            {
+                Text = text;
+            }
+        }
+
+        [Serializable, NetSerializable]
+        public enum PaperUiKey
+        {
+            Key
+        }
+
+        [Serializable, NetSerializable]
+        public enum PaperAction
+        {
+            Read,
+            Write,
+            CrossOut,
+            Stamp
+        }
+
+    }
+}