feat: Change file structure

- Move return object to named export for 11ty config
- screens is now view
- 11ty data files moved to view/_data
- templates is now view/_includes
- Both are the default directories
- data is now used as intended, for user data
- Update index to reflect filenames and structure

source/screens/demo/introduction.liquid

@@ -1,35 +0,0 @@
----
-title: Introduction
-tags:
-- demoIndex
-order: 1
----
-{% layout 'hippie/page.liquid' %}
-
-{% block title %}Einführung{% endblock %}
-
-{% block main %}
-<section class="sec_main_center">
-	<header>
-		<hgroup>
-			<h1>Introduction to HIPPIE</h1>
-			<p>Hippie interweaves preeminent personal interface elements.</p>
-		</hgroup>
-	</header>
-	<article>
-		<p>&hellip;</p>
-		<p>Contact: <a id="special" href=""></a>
-		</p>
-		<p>More: <a class="general" href=""></a>, <a class="general" href=""></a>
-		</p>
-	</article>
-</section>
-{% endblock %}
-
-{% block script %}
-{{ block.super -}}
-<script>
-	composeMail('special', 'me', 'domain', 'tld', 'Me', 'HIPPIE')
-	composeMail('.general', 'name', 'domain', 'tld', '', '')
-</script>
-{% endblock %}