Implement minimized action to hide the application on close (#60)

* Implement minimzed action to hide the application on close instead of
closing it.

* Add close event on the tray icon

* Add all items in the menu (not only Show/Close app)

* Changes on mainWindow. Toggle instead of Open/Close pair button

src/pages/settings/preload.js

@@ -21,6 +21,7 @@ function refreshSettings() {
   mpris.checked = store.get(settings.mpris);
   enableCustomHotkeys.checked = store.get(settings.enableCustomHotkeys);
   enableDiscord.checked = store.get(settings.enableDiscord);
+  minimizeOnClose.checked = store.get(settings.minimizeOnClose);
 }
 
 /**
@@ -80,6 +81,7 @@ window.addEventListener("DOMContentLoaded", () => {
   port = get("port");
   menuBar = get("menuBar");
   trayIcon = get("trayIcon");
+  minimizeOnClose = get("minimizeOnClose");
   mpris = get("mprisCheckbox");
   enableCustomHotkeys = get("enableCustomHotkeys");
   enableDiscord = get("enableDiscord");
@@ -95,4 +97,5 @@ window.addEventListener("DOMContentLoaded", () => {
   addInputListener(mpris, settings.mpris);
   addInputListener(enableCustomHotkeys, settings.enableCustomHotkeys);
   addInputListener(enableDiscord, settings.enableDiscord);
+  addInputListener(minimizeOnClose, settings.minimizeOnClose);
 });

src/pages/settings/settings.html

@@ -80,6 +80,16 @@
                               <span class="slider round"></span>
                           </label>
                       </div>
+                      <div class="option">
+                        <h4>Minimize on Close</h4>
+                        <p>
+                            Minimize window on close instead <br />
+                        </p>
+                        <label class="switch">
+                            <input id="minimizeOnClose" type="checkbox">
+                            <span class="slider round"></span>
+                        </label>
+                      </div>
                       <div class="option">
                         <h4>Hotkeys</h4>
                         <p>