docs: add deprecation notice (#853)

* docs: add deprecation notice

depends on netlify/build#4783

* style: lint

README.md

@@ -1,3 +1,8 @@
+> # **Important Notice**
+>
+> This repository was moved into the mono repository of [github.com/netlify/build](https://github.com/netlify/build) The
+> package name and the versions are preserved!
+
 [![npm version](https://img.shields.io/npm/v/@netlify/framework-info.svg)](https://npmjs.org/package/@netlify/framework-info)
 [![Coverage Status](https://codecov.io/gh/netlify/framework-info/branch/main/graph/badge.svg)](https://codecov.io/gh/netlify/framework-info)
 [![Build](https://github.com/netlify/framework-info/workflows/Build/badge.svg)](https://github.com/netlify/framework-info/actions)