Implement Graph

Changelog.md

@@ -6,6 +6,7 @@
 
 -   added `/graph.html` to fetch measurements from the debug log and display them as a graph. Activate debug logging for this feature to work.
 -   Added PreValue to `/json` ([#1154](https://github.com/jomjol/AI-on-the-edge-device/issues/1154))
+-   Show graph of values direct in the user interface (thanks to [@rdmueller](https://github.com/rdmueller))
 
 ### Changed
 

sd-card/html/index.html

@@ -62,6 +62,7 @@
       </ul>
 
     <li><a href="#" onclick="loadPage('wasserzaehler.html?full');">Recognition</a></li>
+    <li><a href="#" onclick="loadPage('graph.html');">Data Graph</a></li>
     <li><a href="#" onclick="loadPage('fileserver/');">File Server</a></li>
     <li><a>System <i class="arrow down"></i></a>
         <ul class="submenu">