init tab child widgets

src/app/browser/main/tab.rs

@@ -1,6 +1,22 @@
+#[path = "tab/label.rs"] mod label;
+#[path = "tab/page.rs"] mod page;
+
 use gtk::Notebook;
 
 pub fn new() -> Notebook
 {
     return Notebook::builder().scrollable(true).build();
+}
+
+pub fn append(
+    tab : Notebook,
+    is_current : bool
+) -> u32
+{
+    return tab.append_page(
+        &page::new(),
+        Some(
+            &label::new()
+        )
+    );
 }