Add file viwer route

app/templates/usb-file-viewer.html

@@ -0,0 +1,37 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div>
+<table class="table">
+  <thead>
+    <tr>
+       <th></th>
+      <th>File Name</th>
+      <th>Date modified</th>
+        <th>Download</th>
+    </tr>
+  </thead>
+      <tbody>
+    {% for f in render_files %}
+    <tr>
+        <td><img src="{{ f.icon_url}}"></td>
+        {% if f.is_dir %}
+        <td><a href=".{{ f.relative_path}}">{{ f.name}}</a></td>
+        {% endif %}
+
+        {% if f.is_file %}
+        <td>{{ f.name}}</td>
+        {% endif %}
+
+        <td>{{ f.last_modified}}</td>
+          {% if f.is_file %}
+           <td><a href="{{ url_for('serve_file', filepath=f.path) }}">Download</a></td>
+          {% endif %}
+          {% if f.is_dir %}
+            <td></td>
+          {% endif %}
+      </tr>
+    {% endfor %}
+</tbody>
+</table>
+ {% endblock %}