Setting up template layout system

src/routes/index.pug

@@ -1 +1,4 @@
-p Hello, world!
+extends ../templates/layout
+
+block content
+  h1 Home page

src/templates/layout.pug

@@ -0,0 +1,29 @@
+doctype html
+
+html(lang="en")
+
+  head
+
+    meta(charset="utf-8")
+    meta(name="viewport", content="width=device-width, initial-scale=1, shrink-to-fit=no")
+    meta(name="description", content="Builder for hcitool class codes")
+
+    title Bluetooth Class
+
+    link(rel="stylesheet", href="/index.css")
+
+  body
+
+    header
+      noscript This application requires JavaScript to run!
+
+    main
+      block content
+
+    footer
+      h2
+        span Built by
+        a(href="https://mobiusk.com")  MobiusK
+
+  block scripts
+    script(src="/index.js")