added keybinding extendable logic

user_config/usr/share/app_name/Main_Window.glade

@@ -1,12 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 -->
+<!-- Generated with glade 3.38.2 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <object class="GtkApplicationWindow" id="Main_Window">
-    <property name="can_focus">False</property>
-    <child>
-      <placeholder/>
-    </child>
+    <property name="can-focus">False</property>
+    <signal name="key-release-event" handler="on_global_key_release_controller" swapped="no"/>
     <child>
       <placeholder/>
     </child>