feat: add quote item to PromptEngine (#338)

### What problem does this PR solve?

Show original text source in conversation messages

Issue link: #337

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chat/chat-configuration-modal/prompt-engine.tsx

@@ -172,6 +172,15 @@ const PromptEngine = (
       >
         <Slider max={30} />
       </Form.Item>
+      <Form.Item
+        label={t('quote')}
+        valuePropName="checked"
+        name={['prompt_config', 'quote']}
+        tooltip={t('quoteTip')}
+        initialValue={true}
+      >
+        <Switch />
+      </Form.Item>
       <section className={classNames(styles.variableContainer)}>
         <Row align={'middle'} justify="end">
           <Col span={7} className={styles.variableAlign}>