Add native Crystal exploration port and reference tooling

index.html

@@ -0,0 +1,21 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, viewport-fit=cover"
+    />
+    <meta name="theme-color" content="#102b2a" />
+    <meta
+      name="description"
+      content="A native web port of Pokémon Crystal, using assets from your own ROM. First exploration milestone."
+    />
+    <title>Crystal · Native web port</title>
+    <link rel="icon" href="%BASE_URL%icon.svg" type="image/svg+xml" />
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>