feat(pwa): make the app installable

Manifest, gamepad icon (also the new favicon, instead of
the Vite logo), iOS meta tags and the tab title
ToBePlayed. No service worker, so a deploy never meets
an old cached bundle. The title bar color follows
light and dark mode. The README also lists adding a
game by name.

index.html

@@ -3,8 +3,15 @@
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <link rel="manifest" href="/manifest.webmanifest" />
+    <link rel="apple-touch-icon" href="/apple-touch-icon.png" />
+    <meta name="theme-color" content="#09090b" />
+    <meta name="apple-mobile-web-app-title" content="TBP" />
+    <meta name="mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Game Log</title>
+    <title>ToBePlayed</title>
   </head>
   <body>
     <div id="root"></div>