feat(agent): 新增智能体应用功能

- 添加智能体列表页面和相关API
- 实现聊天功能，包括历史对话和当前对话
- 新增工作流功能，包括表单提交和结果展示- 优化路由配置，增加智能体相关路由
- 添加全局常量和枚举，用于智能体类型区分

src/views/Agent/work-flow/style.scss

@@ -0,0 +1,41 @@
+.chat-wrap {
+  .chat-contain {
+    font-family: Avenir, Helvetica, Arial, sans-serif;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+    color: #2c3e50;
+    margin-top: 24px;
+
+    .span-back {
+      color: var(--Text-2, #3C4043);
+      font-size: 14px;
+      font-family: Alibaba PuHuiTi;
+      font-weight: 400;
+      line-height: 62px;
+      word-wrap: break-word
+    }
+  }
+
+  .span-back {
+    color: var(--Text-2, #3C4043);
+    font-size: 14px;
+    font-family: Alibaba PuHuiTi;
+    line-height: 22px;
+    word-wrap: break-word
+  }
+
+  .content-container {
+    width: 40%;
+    background-color: #fff;
+  }
+
+  .work-res-span {
+    padding: 24px;
+    line-height: 34px;
+  }
+
+  .layout-sider{
+    border-radius: 6px;
+    margin-left: 20px;
+  }
+}