feat: add mention a person to add a new block on mobile

Author: asjqkkkk

frontend/appflowy_flutter/lib/plugins/document/presentation/editor_plugins/mobile_toolbar_v3/add_block_menu_item_builder.dart

@@ -9,6 +9,7 @@ import 'package:appflowy/plugins/document/presentation/editor_plugins/mention/me
 import 'package:appflowy/plugins/document/presentation/editor_plugins/mention/mobile_page_selector_sheet.dart';
 import 'package:appflowy/plugins/document/presentation/editor_plugins/mobile_toolbar_item/mobile_add_block_toolbar_item.dart';
 import 'package:appflowy/plugins/document/presentation/editor_plugins/plugins.dart';
+import 'package:appflowy/plugins/document/presentation/editor_plugins/slash_menu/slash_menu_items/mention_item.dart';
 import 'package:appflowy/startup/startup.dart';
 import 'package:appflowy/startup/tasks/app_widget.dart';
 import 'package:appflowy/workspace/presentation/home/menu/menu_shared_state.dart';
@@ -329,6 +330,16 @@ class AddBlockMenuItemBuilder {
           }
         },
       ),
+      TypeOptionMenuItemValue(
+        value: ParagraphBlockKeys.type,
+        backgroundColor: colorMap[MentionBlockKeys.type]!,
+        text: LocaleKeys.document_mentionMenu_person.tr(),
+        icon: FlowySvgs.mention_invite_user_m,
+        onTap: (_, __) async {
+          AppGlobals.rootNavKey.currentContext?.pop(true);
+          await editorState.insertAtCharacter();
+        },
+      ),
     ];
   }
 

frontend/appflowy_flutter/lib/plugins/document/presentation/editor_plugins/slash_menu/slash_menu_items/mention_item.dart

@@ -24,7 +24,7 @@ SelectionMenuItem mentionSlashMenuItem = SelectionMenuItem(
   ),
 );
 
-extension on EditorState {
+extension MentionMenuEditorStateExtension on EditorState {
   Future<void> insertAtCharacter() async {
     final selection = this.selection;
     if (selection == null || !selection.isCollapsed) {

frontend/resources/translations/en-US.json

@@ -2209,6 +2209,7 @@
     "mentionMenu": {
       "mentionAPerson": "Mention a person",
       "people": "People",
+      "person": "Person",
       "sendNotification": "Send notification",
       "pages": "Pages",
       "moreResults": "{} more results...",