client,server: Implement shortcut for toggle classic editor toolbar

src/public/app/widgets/ribbon_widgets/classic_editor_toolbar.js

@@ -34,7 +34,11 @@ const TPL = `\
  */
 export default class ClassicEditorToolbar extends NoteContextAwareWidget {
     get name() {
-        return "classicToolbar";
+        return "classicEditor";
+    }
+
+    get toggleCommand() {
+        return "toggleRibbonTabClassicEditor";
     }
 
     doRender() {

src/services/keyboard_actions.ts

@@ -420,6 +420,12 @@ function getDefaultKeyboardActions() {
             separator: t("keyboard_actions.ribbon-tabs")
         },
     
+        {
+            actionName: "toggleRibbonTabClassicEditor",
+            defaultShortcuts: [],
+            description: t("keyboard_actions.toggle-classic-editor-toolbar"),
+            scope: "window"
+        },
         {
             actionName: "toggleRibbonTabBasicProperties",
             defaultShortcuts: [],