Improve repo tooling (#398)

* add basic git files to root

* make server part of monorepo

* import promo

* import libraries base

* import docs

* import desktop

* move docs and promo

sites/docs/.vscode/extensions.json

@@ -0,0 +1,8 @@
+{
+  "recommendations": [
+    "astro-build.astro-vscode",
+    "hideoo.starlight-links",
+    "unifiedjs.vscode-mdx"
+  ],
+  "unwantedRecommendations": []
+}