Began work on the tools command processing.

src/SlatedGameToolkit.Tools/System/IInvocable.cs

@@ -0,0 +1,27 @@
+namespace SlatedGameToolkit.Tools.System
+{
+    public interface IInvocable
+    {
+        /// <summary>
+        /// Invokers are the strings that should invoke this command.
+        /// This should not conflict with any other commands invokers.
+        /// </summary>
+        /// <returns>A list of the strings that will invoke this invokable.</returns>
+        string[] GetInvokers();
+
+        /// <summary>
+        /// The help should be a description of how to properly use this invokable.
+        /// If an argument is specified, the help should cater to that specific argument.
+        /// </summary>
+        /// <param name="arg">An argument this invokable should describe. May be null, to which should return a string that describes this invokable in general.</param>
+        /// <returns></returns>
+        string getHelp(string arg);
+        
+        /// <summary>
+        /// Executes this invokable.
+        /// </summary>
+        /// <param name="args">The arguments that followed the invokable.</param>
+        /// <returns>True if the invokable was successful, false otherwise to display a generic help message.</returns>
+        bool Execute(string[] args);
+    }
+}