Alan turing portal (#815)

* [alan-turing-portal][m] - initial commit

* [alan-turing][m] - first page with search

* [alan-turing][m] - cleanup

examples/alan-turing-portal/styles/tailwind.css

@@ -0,0 +1,4 @@
+@import 'tailwindcss/base';
+@import 'tailwindcss/components';
+@import './prism.css';
+@import 'tailwindcss/utilities';