add model training

cmd/ingestd/web/index.html

@@ -58,6 +58,10 @@
             <div class="label">Pressure hPa</div>
             <div class="value" id="live-pressure">--</div>
           </div>
+          <div class="metric">
+            <div class="label">Rain 1h %</div>
+            <div class="value" id="live-rain-prob">--</div>
+          </div>
           <div class="metric">
             <div class="label">Wind m/s</div>
             <div class="value" id="live-wind">--</div>