added feature function to clear console manually

src/files.h

@@ -140,7 +140,8 @@ R"RAW(
 #endif
 R"RAW(
         "close_tab": "<primary>w",
-        "window_toggle_split": ""
+        "window_toggle_split": "",
+        "clear_console": "<primary><shift>c"
     },
     "project": {
         "default_build_path_comment": "Use <project_directory_name> to insert the project top level directory name",

src/menu.cc

@@ -349,6 +349,12 @@ Menu::Menu() {
           <attribute name='action'>app.window_toggle_split</attribute>
         </item>
       </section>
+      <section>
+        <item>
+          <attribute name='label' translatable='yes'>_Clear _Console</attribute>
+          <attribute name='action'>app.clear_console</attribute>
+        </item>
+      </section>
     </submenu>
   </menu>
 </interface>

src/window.cc

@@ -1047,6 +1047,9 @@ void Window::set_menu_actions() {
   menu.add_action("window_toggle_split", [this] {
     Notebook::get().toggle_split();
   });
+  menu.add_action("clear_console", [this] {
+    Terminal::get().clear();
+  });
 }
 
 void Window::activate_menu_items(bool activate) {