feat: SEO Improvements

- Added `APP_STAGING` variable to `.env.example`
- Updated `config/app.php` to use `APP_STAGING` for determining the value of `IS_STAGING`
- Updated `resources/views/layouts/app.blade.php` and `resources/views/posts/show.blade.php` to include additional meta tags for SEO and attribution

resources/views/layouts/app.blade.php

@@ -18,9 +18,12 @@
     <title>@yield('title')</title>
     <meta name="description" content="@yield('description')">
 
+    @stack('meta_tags')
+
     <!-- OpenGraph -->
     <meta property="og:site_name" content="Heimerdinger.LoL">
     <meta property="og:title" content="@yield('title')">
+    <meta property="og:url" content="{{url()->current()}}">
     <meta property="og:description" content="@yield('description')">
     <meta property="og:locale" content="en">
     <meta property="og:type" content="website">

resources/views/posts/show.blade.php

@@ -4,6 +4,14 @@
 @section('title', $post->title . ' • Heimerdinger.LoL')
 @section('description', 'Heimerdinger.LoL: ' . $post->description)
 
+@push('meta_tags')
+    <link rel="canonical" href="{{config('app.HEIMER_URL') . '/post/' . $post->slug}}">
+
+    <meta name="author" content="Heimerdinger.LoL">
+    <meta name="robots" content="index, follow">
+    <meta name="googlebot" content="index, follow">
+@endpush
+
 @section('content')
     <a href="{{route('posts.index')}}"
        class="block mt-8 text-center text-orange-400 text-sm uppercase font-medium hover:underline">Back