[chore] Add readme file

Author: BrainBuzzer

README.md

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+# PHP Version Manager for Windows
+
+## What is it?
+
+PHP Version Manager is a simple tool to help you switch between different versions of PHP on Windows.
+
+## Installation
+
+Download the latest release by heading over to our [releases](https://github.com/BrainBuzzer/php-ch/releases) page. Install it as usual.
+
+## Usage
+
+### Switching PHP versions
+
+To switch to a different version of PHP, simply run the following command:
+
+```cmd
+php-ch set [version]
+```
+
+Currently supported PHP versions are:
+7.4
+8.0
+8.1
+8.2
+
+# Contributing
+
+Feel free to open an issue or a pull request if you have any suggestions or bug reports.
+
+# Contributors
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+