New docs site (#2521)

* initial docs

* more docs work

* Update readme + add license

* update frontend GH action

apps/docs/src/content/config.ts

@@ -0,0 +1,6 @@
+import { defineCollection } from 'astro:content';
+import { docsSchema } from '@astrojs/starlight/schema';
+
+export const collections = {
+	docs: defineCollection({ schema: docsSchema() }),
+};