added hrm sport mode setting

apps/sportmode/boot.js

@@ -0,0 +1,7 @@
+{
+  const settings = Object.assign({
+    mode: -1,
+  }, require('Storage').readJSON("sportmode.json", true) || {});
+
+  Bangle.setOptions({hrmSportMode: settings.mode});
+}

apps/sportmode/metadata.json

@@ -0,0 +1,16 @@
+{
+  "id": "sportmode",
+  "name": "HRM Sport mode",
+  "shortName":"Sport mode",
+  "icon": "app.png",
+  "version":"0.01",
+  "description": "Allows to set the sport mode of the Heart rate monitor in app settings.",
+  "type": "bootloader",
+  "tags": "health",
+  "supports": ["BANGLEJS2"],
+  "storage": [
+    {"name":"sportmode.boot.js","url":"boot.js"},
+    {"name":"sportmode.settings.js","url":"settings.js"}
+  ],
+  "data": [{"name":"sportmode.json"}]
+}

apps/sportmode/settings.js

@@ -0,0 +1,54 @@
+(function(back) {
+  const FILE = "sportmode.json";
+  const settings = Object.assign({
+    mode: -1,
+  }, require('Storage').readJSON(FILE, true) || {});
+
+  function writeSettings() {
+    require('Storage').writeJSON(FILE, settings);
+  }
+
+  // see Espruino/libs/misc/vc31_binary/algo.h
+  const SPORT_MODES = [
+    /*LANG*/"Normal",
+    /*LANG*/"Running",
+    /*LANG*/"Ride bike",
+    /*LANG*/"Jump rope",
+    /*LANG*/"Swimming",
+    /*LANG*/"Badminton",
+    /*LANG*/"Table tennis",
+    /*LANG*/"Tennis",
+    /*LANG*/"Climbing",
+    /*LANG*/"Walking",
+    /*LANG*/"Basketball",
+    /*LANG*/"Football",
+    /*LANG*/"Baseball",
+    /*LANG*/"Volleyball",
+    /*LANG*/"Cricket",
+    /*LANG*/"Rugby",
+    /*LANG*/"Hockey",
+    /*LANG*/"Dance",
+    /*LANG*/"Spinning",
+    /*LANG*/"Yoga",
+    /*LANG*/"Sit up",
+    /*LANG*/"Treadmill",
+    /*LANG*/"Gymnastics",
+    /*LANG*/"Boating",
+    /*LANG*/"Jumping jack",
+    /*LANG*/"Free training",
+  ];
+
+  E.showMenu({
+    "" : { "title" : /*LANG*/"HRM sport mode" },
+    "< Back" : () => back(),
+    /*LANG*/'Sport mode': {
+      value: settings.mode,
+      min: -1, max: 25,
+      format: v => v === -1 ? /*LANG*/"Auto" : SPORT_MODES[v],
+      onchange: v => {
+        settings.mode = v;
+        writeSettings();
+      }
+    },
+  });
+})