feat: 对接星火大模型

feat: 大模型选择器
feat: 聊天页面适配手机端

components/aigc/chat/ChatItem.vue

@@ -34,7 +34,7 @@ const dayjs = useDayjs()
     </div>
     <div
         @click.stop="emit('remove', chatSession)"
-        class="chat-card-remove-btn text-neutral-400 group-hover:opacity-100 group-hover:-translate-x-0.5"
+        class="chat-card-remove-btn text-neutral-400 group-hover:opacity-100 md:group-hover:-translate-x-0.5"
     >
       <UIcon name="i-tabler-trash"/>
     </div>
@@ -60,7 +60,7 @@ const dayjs = useDayjs()
   }
 
   &-remove-btn {
-    @apply absolute top-0.5 right-0 opacity-0;
+    @apply absolute top-0.5 right-0 md:opacity-0;
     @apply transition duration-300 hover:text-red-400;
     @apply cursor-pointer;
   }