docs: add badges

Author: JustSamuel

README.md

@@ -1,4 +1,9 @@
+
 # TypeScript wrapper for the mailcow API
+[![npm version](https://img.shields.io/npm/v/ts-mailcow-api)](https://www.npmjs.com/package/ts-mailcow-api)
+[![Build Status](https://github.com/JustSamuel/ts-mailcow-api/actions/workflows/lint-and-build.yml/badge.svg)](https://github.com/JustSamuel/ts-mailcow-api/actions/workflows/lint-and-build.yml)
+[![License](https://img.shields.io/npm/l/ts-mailcow-api)](https://github.com/JustSamuel/ts-mailcow-api/blob/main/LICENSE)
+[![Downloads](https://img.shields.io/npm/dt/ts-mailcow-api)](https://www.npmjs.com/package/ts-mailcow-api)
 
 Provides typing and a easy to use interface for the [Mailcow API](https://mailcow.docs.apiary.io/#).