Objects interfaces and other minor changes

system/engine/autoload.php

@@ -86,6 +86,10 @@
 		'traits\\action',
 		'interfaces\\databases',
 		'interfaces\\serializer',
+		'interfaces\\common\\registers',
+		'interfaces\\controller',
+		'interfaces\\helper',
+		'interfaces\\model',
 		'exception',
 		'render',
 		'debug',

system/engine/registry.php

@@ -69,7 +69,7 @@ final class Registry {
 
 	/**
 	 * @param string $key 
-	 * @param string $value 
+	 * @param mixed $value 
 	 * @return void 
 	 */
 	public function set($key, $value) {

system/session/autoload.php

@@ -240,4 +240,24 @@ final class Session
     {
         return session_id();
     }
+
+    /**
+     * 
+     * @param string $key 
+     * @return mixed|null 
+     */
+    public function getData($key) {
+        return $this->data[$key] ?? null;
+    }
+
+    /**
+     * 
+     * @param string $key 
+     * @param mixed $value 
+     * @return $this 
+     */
+    public function setData($key, $value) {
+        $this->data[$key] = $value;
+        return $this;
+    }
 }