create separated mod for page widget

src/app/browser/window/tab/item/page/widget.rs

@@ -0,0 +1,45 @@
+use gtk::{
+    gio::{SimpleAction, SimpleActionGroup},
+    prelude::{ActionMapExt, BoxExt, WidgetExt},
+    Box, Orientation,
+};
+use std::sync::Arc;
+
+pub struct Widget {
+    gobject: Box,
+}
+
+impl Widget {
+    // Construct
+    pub fn new_arc(
+        // Actions
+        action_page_open: Arc<SimpleAction>,
+        // Options
+        name: &str,
+        // Components
+        navigation: &Box,
+        content: &Box,
+    ) -> Arc<Self> {
+        // Init additional action group
+        let action_group = SimpleActionGroup::new();
+        action_group.add_action(action_page_open.as_ref());
+
+        // Init self
+        let gobject = Box::builder()
+            .orientation(Orientation::Vertical)
+            .name(name)
+            .build();
+
+        gobject.append(navigation);
+        gobject.append(content);
+
+        gobject.insert_action_group("page", Some(&action_group));
+
+        Arc::new(Self { gobject })
+    }
+
+    // Getters
+    pub fn gobject(&self) -> &Box {
+        &self.gobject
+    }
+}