[filemanager]添加滚动查看日志

pages/API/get-file-system-manager/get-file-system-manager.uvue

 <template>
 	<!-- #ifdef APP -->
-	<text>显示简易操作日志,详细日志需真机运行查看</text><button size="mini" @click="log=''">清空日志</button>
-	<text style="margin: 2px; padding: 2px; border: 1px solid #000000;">{{ log }}</text>
+	<text>显示简易操作日志(可滚动查看),详细日志需真机运行查看</text><button size="mini" @click="log=''">清空日志</button>
+  <scroll-view style="max-height: 300px;">
+	  <text style="margin: 2px; padding: 2px; border: 1px solid #000000;">{{ log }}</text>
+  </scroll-view >
 	<scroll-view style="flex: 1;">
 	<!-- #endif -->
 		<button class="btnstyle" type="primary" @tap="statFileInfoTest"