Further expanded plugins

Added navigation between modules

src/Artemis.Plugins/Interfaces/IModule.cs

@@ -6,5 +6,16 @@
     /// </summary>
     public interface IModule : IPlugin
     {
+        /// <summary>
+        ///     Called each frame when the module must update
+        /// </summary>
+        /// <param name="deltaTime">Time since the last update</param>
+        void Update(double deltaTime);
+
+        /// <summary>
+        ///     Called each frame when the module must render
+        /// </summary>
+        /// <param name="deltaTime">Time since the last render</param>
+        void Render(double deltaTime);
     }
 }