Rename /version endpoint to /firmware_info; add heap memory statistics to firmware data and UI.

Software/MainBoard/rust/src_webpack/src/ota.html

@@ -21,6 +21,7 @@
     <div class="subtitle">
         Current Firmware
     </div>
+    <button style="margin-left: auto;" type="button" id="refresh_firmware_info">Refresh</button>
 </div>
 <div class="flexcontainer">
     <span class="otakey">Buildtime:</span>
@@ -42,12 +43,35 @@
     <span class="otakey">State1:</span>
     <span class="otavalue" id="firmware_state1"></span>
 </div>
-
 <div class="flexcontainer">
     <form class="otaform" id="upload_form" method="post">
         <input class="otachooser" type="file" name="file1" id="firmware_file"><br>
     </form>
 </div>
+<div class="flexcontainer">
+    <div class="subtitle">
+        Heap Memory
+    </div>
+    <div></div>
+</div>
+<div class="flexcontainer">
+    <span class="otakey">Free:</span>
+    <span class="otavalue" id="heap_free"></span>
+</div>
+<div class="flexcontainer">
+    <span class="otakey">Used:</span>
+    <span class="otavalue" id="heap_used"></span>
+</div>
+<div class="flexcontainer">
+    <span class="otakey">Total:</span>
+    <span class="otavalue" id="heap_total"></span>
+</div>
+<div class="flexcontainer">
+    <span class="otakey">Peak used:</span>
+    <span class="otavalue" id="heap_max_used"></span>
+</div>
+
+
 <div class="display:flex">
     <button style="margin-left: 16px; margin-top: 8px;" class="col-6" type="button" id="test">Self-Test</button>
 </div>