Added CommandData class to keep track of who sent the command and what the whole command was.

CommandHook/CommandData.cs

@@ -0,0 +1,20 @@
+using Vintagestory.API.Server;
+
+namespace CommandHook;
+
+public class CommandData
+{
+    public IServerPlayer? Sender { get; }
+    public string FullCommand { get; }
+    public bool IsPlayerCommand { get; }
+    public bool Cancel { get; set; }
+
+
+    public CommandData(IServerPlayer sender, string fullCommand)
+    {
+        Sender = sender;
+        IsPlayerCommand = Sender != null;
+        FullCommand = fullCommand?.Trim() ?? string.Empty;
+        Cancel = false;
+    }
+}