adding favicon

app/views/layouts/application.haml

@@ -4,6 +4,25 @@
     %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}/
     %title Hubfeenix Volunteers
     %meta{:content => "width=device-width,initial-scale=1", :name => "viewport"}/
+    // https://www.favicon-generator.org/
+    %link{:href => "/apple-icon-57x57.png", :rel => "apple-touch-icon", :sizes => "57x57"}/
+    %link{:href => "/apple-icon-60x60.png", :rel => "apple-touch-icon", :sizes => "60x60"}/
+    %link{:href => "/apple-icon-72x72.png", :rel => "apple-touch-icon", :sizes => "72x72"}/
+    %link{:href => "/apple-icon-76x76.png", :rel => "apple-touch-icon", :sizes => "76x76"}/
+    %link{:href => "/apple-icon-114x114.png", :rel => "apple-touch-icon", :sizes => "114x114"}/
+    %link{:href => "/apple-icon-120x120.png", :rel => "apple-touch-icon", :sizes => "120x120"}/
+    %link{:href => "/apple-icon-144x144.png", :rel => "apple-touch-icon", :sizes => "144x144"}/
+    %link{:href => "/apple-icon-152x152.png", :rel => "apple-touch-icon", :sizes => "152x152"}/
+    %link{:href => "/apple-icon-180x180.png", :rel => "apple-touch-icon", :sizes => "180x180"}/
+    %link{:href => "/android-icon-192x192.png", :rel => "icon", :sizes => "192x192", :type => "image/png"}/
+    %link{:href => "/favicon-32x32.png", :rel => "icon", :sizes => "32x32", :type => "image/png"}/
+    %link{:href => "/favicon-96x96.png", :rel => "icon", :sizes => "96x96", :type => "image/png"}/
+    %link{:href => "/favicon-16x16.png", :rel => "icon", :sizes => "16x16", :type => "image/png"}/
+    %link{:href => "/manifest.json", :rel => "manifest"}/
+    %meta{:content => "#ffffff", :name => "msapplication-TileColor"}/
+    %meta{:content => "/ms-icon-144x144.png", :name => "msapplication-TileImage"}/
+    %meta{:content => "#ffffff", :name => "theme-color"}/
+
     = csrf_meta_tags
     = csp_meta_tag
     = stylesheet_link_tag "tailwind"

public/browserconfig.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig><msapplication><tile><square70x70logo src="/ms-icon-70x70.png"/><square150x150logo src="/ms-icon-150x150.png"/><square310x310logo src="/ms-icon-310x310.png"/><TileColor>#ffffff</TileColor></tile></msapplication></browserconfig>

public/manifest.json

@@ -0,0 +1,41 @@
+{
+ "name": "App",
+ "icons": [
+  {
+   "src": "\/android-icon-36x36.png",
+   "sizes": "36x36",
+   "type": "image\/png",
+   "density": "0.75"
+  },
+  {
+   "src": "\/android-icon-48x48.png",
+   "sizes": "48x48",
+   "type": "image\/png",
+   "density": "1.0"
+  },
+  {
+   "src": "\/android-icon-72x72.png",
+   "sizes": "72x72",
+   "type": "image\/png",
+   "density": "1.5"
+  },
+  {
+   "src": "\/android-icon-96x96.png",
+   "sizes": "96x96",
+   "type": "image\/png",
+   "density": "2.0"
+  },
+  {
+   "src": "\/android-icon-144x144.png",
+   "sizes": "144x144",
+   "type": "image\/png",
+   "density": "3.0"
+  },
+  {
+   "src": "\/android-icon-192x192.png",
+   "sizes": "192x192",
+   "type": "image\/png",
+   "density": "4.0"
+  }
+ ]
+}