HackStudio: Add option to open file in single click

This feature is similar to Clion's "Open files with Single Click" which
allows user to open file without double clicking it

HackStudio: Update action name to remove "toggle"

Action name does need to include "Toggle" word since its already implie
d with checkable action

Userland/DevTools/HackStudio/HackStudioWidget.cpp

@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2020-2022, Itamar S. <itamar8910@gmail.com>
+ * Copyright (c) 2023-2024, Abhishek R. <raturiabhi1000@gmail.com>
  * Copyright (c) 2020-2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -866,6 +867,13 @@ ErrorOr<NonnullRefPtr<GUI::Action>> HackStudioWidget::create_remove_current_edit
     });
 }
 
+ErrorOr<NonnullRefPtr<GUI::Action>> HackStudioWidget::create_toggle_open_file_in_single_click_action()
+{
+    return GUI::Action::create_checkable("&Open File with Single Click", [this](auto&) {
+        m_project_tree_view->set_activates_on_selection(!m_project_tree_view->activates_on_selection());
+    });
+}
+
 ErrorOr<NonnullRefPtr<GUI::Action>> HackStudioWidget::create_open_action()
 {
     auto icon = TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/open.png"sv));
@@ -1498,6 +1506,8 @@ ErrorOr<void> HackStudioWidget::create_view_menu(GUI::Window& window)
     view_menu.add_action(show_dotfiles_action);
     m_toggle_semantic_highlighting_action = TRY(create_toggle_syntax_highlighting_mode_action());
     view_menu.add_action(*m_toggle_semantic_highlighting_action);
+    m_toggle_view_file_in_single_click_action = TRY(create_toggle_open_file_in_single_click_action());
+    view_menu.add_action(*m_toggle_view_file_in_single_click_action);
     view_menu.add_separator();
 
     m_wrapping_mode_actions.set_exclusive(true);

Userland/DevTools/HackStudio/HackStudioWidget.h

@@ -113,6 +113,7 @@ private:
     NonnullRefPtr<GUI::Action> create_remove_current_editor_tab_widget_action();
     ErrorOr<NonnullRefPtr<GUI::Action>> create_remove_current_editor_action();
     ErrorOr<NonnullRefPtr<GUI::Action>> create_open_action();
+    ErrorOr<NonnullRefPtr<GUI::Action>> create_toggle_open_file_in_single_click_action();
     NonnullRefPtr<GUI::Action> create_save_action();
     NonnullRefPtr<GUI::Action> create_save_as_action();
     NonnullRefPtr<GUI::Action> create_show_in_file_manager_action();
@@ -247,6 +248,7 @@ private:
     RefPtr<GUI::Action> m_locations_history_back_action;
     RefPtr<GUI::Action> m_locations_history_forward_action;
     RefPtr<GUI::Action> m_toggle_semantic_highlighting_action;
+    RefPtr<GUI::Action> m_toggle_view_file_in_single_click_action;
     RefPtr<GUI::Action> m_open_project_configuration_action;
 
     RefPtr<Gfx::Font const> read_editor_font_from_config();