Add api for sessions and add max_tokens for tenant_llm (#3472)

### What problem does this PR solve?

Add api for sessions and add max_tokens for tenant_llm

### Type of change

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

---------

Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>

web/src/pages/user-setting/setting-model/google-modal/index.tsx

@@ -1,7 +1,7 @@
 import { useTranslate } from '@/hooks/common-hooks';
 import { IModalProps } from '@/interfaces/common';
 import { IAddLlmRequestBody } from '@/interfaces/request/llm';
-import { Form, Input, Modal, Select } from 'antd';
+import { Form, Input, Modal, Select, InputNumber } from 'antd';
 
 type FieldType = IAddLlmRequestBody & {
   google_project_id: string;
@@ -27,6 +27,7 @@ const GoogleModal = ({
     const data = {
       ...values,
       llm_factory: llmFactory,
+      max_tokens:values.max_tokens,
     };
 
     onOk?.(data);
@@ -87,6 +88,31 @@ const GoogleModal = ({
         >
           <Input placeholder={t('GoogleServiceAccountKeyMessage')} />
         </Form.Item>
+        <Form.Item<FieldType>
+          label={t('maxTokens')}
+          name="max_tokens"
+          rules={[
+            { required: true, message: t('maxTokensMessage') },
+            {
+              type: 'number',
+              message: t('maxTokensInvalidMessage'),
+            },
+            ({ getFieldValue }) => ({
+              validator(_, value) {
+                if (value < 0) {
+                  return Promise.reject(new Error(t('maxTokensMinMessage')));
+                }
+                return Promise.resolve();
+              },
+            }),
+          ]}
+        >
+          <InputNumber
+            placeholder={t('maxTokensTip')}
+            style={{ width: '100%' }}
+          />
+        </Form.Item>
+
       </Form>
     </Modal>
   );