feat(insert time): Add inserting time via UI

packages/ckeditor5/src/plugins/insertDateTime.ts

@@ -0,0 +1,30 @@
+import { ButtonView, Plugin } from 'ckeditor5';
+import dateTimeIcon from '../icons/date-time.svg?raw';
+
+export default class InsertDateTimePlugin extends Plugin {
+    init() {
+        const editor = this.editor;
+
+        editor.ui.componentFactory.add('dateTime', locale => {
+            const view = new ButtonView( locale );
+
+            view.set( {
+                label: 'Date time',
+                icon: dateTimeIcon,
+                tooltip: true
+            } );
+
+            // enable internal link only if the editor is not read only
+            view.bind('isEnabled').to(editor, 'isReadOnly', isReadOnly => !isReadOnly);
+
+            view.on('execute', () => {
+                const editorEl = editor.editing.view.getDomRoot();
+                const component = glob.getComponentByEl(editorEl);
+
+                component.triggerCommand('insertDateTimeToText');
+            } );
+
+            return view;
+        });
+    }
+}