add interface window settings

config.json

@@ -1,6 +1,22 @@
 {
     "homepage":"gemini://yggverse.cities.yesterweb.org",
-    "theme":"Default",
+    "interface":
+    {
+        "theme":"Default",
+        "window":
+        {
+            "header":
+            {
+                "enabled":true,
+                "button":
+                {
+                    "close":true
+                }
+            },
+            "width":640,
+            "height":480
+        }
+    },
     "resolver":
     {
         "enabled":true,

src/Yoda.php

@@ -20,7 +20,7 @@ $css = new \GtkCssProvider();
 
 $css->load_from_data(
     \Yggverse\Yoda\Model\File::getTheme(
-        $config->theme
+        $config->interface->theme
     )
 );
 
@@ -35,10 +35,23 @@ $style->add_provider_for_screen(
 $window = new \GtkWindow();
 
 $window->set_size_request(
-    600,
-    480
+    $config->interface->window->width,
+    $config->interface->window->height
 );
 
+if ($config->interface->window->header->enabled)
+{
+    $header = new \GtkHeaderBar();
+
+    $header->set_show_close_button(
+        $config->interface->window->header->button->close
+    );
+
+    $window->set_titlebar(
+        $header
+    );
+}
+
 $window->set_title(
     'Yoda'
 );