draft main tab features

src/app/browser/main/tab.hpp

@@ -0,0 +1,41 @@
+#ifndef APP_BROWSER_MAIN_TAB_H
+#define APP_BROWSER_MAIN_TAB_H
+
+#include <gtkmm/notebook.h>
+
+namespace app::browser::main
+{
+    class Tab : public Gtk::Notebook
+    {
+        public:
+
+            const bool SCROLLABLE = true;
+            const bool REORDERABLE = true;
+
+            class Navbar
+            {
+                public:
+
+                    Navbar();
+            };
+
+            class Body
+            {
+                public:
+
+                    Body();
+            };
+
+            Tab();
+
+            void append(
+                const char * request,
+                bool open,
+                bool focus
+            );
+
+            void update();
+    };
+}
+
+#endif // APP_BROWSER_MAIN_TAB_H