feat(demo): add social graph tags

projects/elements-demo/src/index.html

@@ -4,7 +4,23 @@
     <meta charset="utf-8" />
     <meta name="theme-color" content="#b91c1c" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="twitter:card" content="summary" />
+    <meta
+      property="og:title"
+      content="The best way to lazy load web components in Angular SPAs - @angular-extensions/elements"
+    />
+    <meta
+      property="og:description"
+      content="The best way to lazy load web components in Angular SPAs with help of @angular-extensions/elements, easy to get started with support of tons of useful configurations"
+    />
+    <meta
+      property="og:image"
+      content="https://angular-extensions.github.io/elements/assets/logo/logo.svg"
+    />
+    <meta
+      property="og:url"
+      content="https://angular-extensions.github.io/elements/"
+    />
+    <meta name="twitter:card" content="summary_large_image" />
     <meta name="twitter:creator" content="@tomastrajan" />
 
     <title>Angular Elements Demo</title>