Progressive Web App (#1678)

* pwa support

* Create go.yml

* Delete .github/workflows/go.yml

web/assets/js/sw.js

@@ -0,0 +1,39 @@
+var self = this;
+
+var filesToCache = [
+    '/'
+];
+
+self.addEventListener('install', function (e) {
+    e.waitUntil(
+        caches.open('3xPanel').then(function (cache) {
+            return cache.addAll(filesToCache);
+        })
+    );
+});
+self.addEventListener('activate', function (event) {
+    event.waitUntil(
+        caches.keys().then(function (cacheNames) {
+            return Promise.all(
+                cacheNames.filter(function (cacheName) {
+                }).map(function (cacheName) {
+                    return caches.delete(cacheName);
+                })
+            );
+        })
+    );
+});
+self.addEventListener('fetch', function (event) {
+    event.respondWith(
+        caches.open('mysite-dynamic').then(function (cache) {
+            return cache.match(event.request).then(function (response) {
+                return response || fetch(event.request).then(function (response) {
+                    cache.put(event.request, response.clone());
+                    return response;
+                });
+            });
+        })
+    );
+});
+
+console.clear();