feat(pastes): add page to view pastes

Signed-off-by: SphericalKat <amolele@gmail.com>

lib/ketbin_web/templates/layout/app.html.eex

@@ -31,7 +31,7 @@
       </nav>
 
     </header>
-    <main role="main">
+    <main class="w-full h-full bg-light-grey" role="main">
       <p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
       <p class="alert alert-danger" role="alert"><%= get_flash(@conn, :error) %></p>
       <%= @inner_content %>

lib/ketbin_web/templates/page/show.html.eex

@@ -0,0 +1,4 @@
+
+<pre class="py-6">
+	<code><%= @paste.content %></code>
+</pre>