chore(docs): create README file

Author: sidneypp

README.md

@@ -0,0 +1,19 @@
+# Hyperf Testing
+
+🧪 Drop-in replacement for the `hyperf/testing` component.
+
+Tailored to meet specific needs, especially for advanced testing scenarios.
+
+## Getting Started
+
+### Install
+
+#### Add OpenCodeCo's Composer repository:
+```shell
+composer config repositories.opencodeco composer https://composer.opencodeco.dev
+```
+
+#### Update your `hyperf/testing`:
+```shell
+composer update hyperf/testing
+```