re-add extruder selector

web/kiri/index.css

@@ -1067,6 +1067,18 @@ th, tr, td, label {
 #render-tools > span:not(:hover) .pop {
     display: none;
 }
+/** fdm extruder drop-down */
+#ft-nozzle .splat {
+    width: 10px;
+    height: 10px;
+    margin: 3px;
+    border-radius: 3px;
+    border: 1px solid #555;
+}
+#ft-nozzle > div {
+    flex-direction: row;
+    align-items: center;
+}
 /** selection rotation */
 #ft-rotate {
     gap: 2px;

web/kiri/index.html

@@ -214,6 +214,9 @@
     <!-- toolbar with mesh and rendering options -->
     <div>
         <div id="render-tools">
+            <span id="tool-nozzle"><i class="fas fa-location-pin" title="extruder"></i>
+                <div id="ft-nozzle" class="f-col pop"></div>
+            </span>
             <span id="tool-rotate"><i class="fas fa-rotate-right" title="rotate selection"></i>
                 <div id="ft-rotate" class="grid pop">
                     <div id="rot_x_lt"><i class="fas fa-chevron-left"></i></div>