feat(docs): add animated product website

docs/README.md

@@ -0,0 +1,22 @@
+# VniDrop website
+
+The product website for VniDrop, built with Next.js and exported as a static site.
+
+## Local development
+
+```bash
+npm install
+npm run dev
+```
+
+Open [http://localhost:3000](http://localhost:3000).
+
+## Checks
+
+```bash
+npm run lint
+npm run typecheck
+npm run build
+```
+
+The production build is written to `out/` and can be hosted by any static web server.