feat(site): new home page, docs, and design system (#566)

Co-authored-by: Darius Cepulis <dcepulis@mux.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.prettierrc.json

@@ -0,0 +1,14 @@
+{
+  "plugins": ["prettier-plugin-astro", "prettier-plugin-tailwindcss"],
+  "tailwindStylesheet": "./site/src/styles/globals.css",
+  "tailwindFunctions": ["clsx"],
+  "overrides": [
+    {
+      "files": "*.astro",
+      "options": {
+        "parser": "astro",
+        "astroSkipFrontmatter": true
+      }
+    }
+  ]
+}