feat(plan): create metrics for usage of AskUser tool (#18820)

Co-authored-by: Jerop Kipruto <jerop@google.com>

packages/core/src/tools/ask-user.test.ts

@@ -337,6 +337,14 @@ describe('AskUserTool', () => {
       expect(JSON.parse(result.llmContent as string)).toEqual({
         answers: { '0': 'Quick fix (Recommended)' },
       });
+      expect(result.data).toEqual({
+        ask_user: {
+          question_types: [QuestionType.CHOICE],
+          dismissed: false,
+          empty_submission: false,
+          answer_count: 1,
+        },
+      });
     });
 
     it('should display message when user submits without answering', async () => {
@@ -368,6 +376,14 @@ describe('AskUserTool', () => {
         'User submitted without answering questions.',
       );
       expect(JSON.parse(result.llmContent as string)).toEqual({ answers: {} });
+      expect(result.data).toEqual({
+        ask_user: {
+          question_types: [QuestionType.CHOICE],
+          dismissed: false,
+          empty_submission: true,
+          answer_count: 0,
+        },
+      });
     });
 
     it('should handle cancellation', async () => {
@@ -405,6 +421,12 @@ describe('AskUserTool', () => {
       expect(result.llmContent).toBe(
         'User dismissed ask_user dialog without answering.',
       );
+      expect(result.data).toEqual({
+        ask_user: {
+          question_types: [QuestionType.CHOICE],
+          dismissed: true,
+        },
+      });
     });
   });
 });