Mid-game prototype loading for game admins (#5675)

Content.Shared/Administration/GamePrototypeLoadMessage.cs

@@ -0,0 +1,25 @@
+using System;
+using Lidgren.Network;
+using Robust.Shared.Network;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Administration;
+
+[NetSerializable]
+[Serializable]
+public class GamePrototypeLoadMessage : NetMessage
+{
+    public override MsgGroups MsgGroup => MsgGroups.String;
+
+    public string PrototypeData { get; set; } = string.Empty;
+
+    public override void ReadFromBuffer(NetIncomingMessage buffer)
+    {
+        PrototypeData = buffer.ReadString();
+    }
+
+    public override void WriteToBuffer(NetOutgoingMessage buffer)
+    {
+        buffer.Write(PrototypeData);
+    }
+}