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/view/demo/examples/hello.md

@@ -0,0 +1,10 @@
+---
+title: "Hello World"
+layout: hippie/world.liquid
+tags:
+- demoExample
+---
+
+# {{ title }}
+
+This is a simple example for a *screen* written in Markdown, using Liquid *templates*.