added status badges

Author: staxfur

README.md

@@ -2,6 +2,12 @@
  <img src="https://raw.githubusercontent.com/MCWertGaming/cpp-terminal/readme/logo.svg" alt="CPP-Terminal logo"/>
 </p>
 
+[![Linux CI](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/linux.yml/badge.svg)](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/linux.yml)
+[![Windows CI](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/windows.yml/badge.svg)](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/windows.yml)
+[![MacOS CI](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/macos.yml/badge.svg)](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/macos.yml)
+[![CodeQL](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/codeql-analysis.yml/badge.svg)](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/codeql-analysis.yml)
+[![clang-format Check](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/clang-format.yml/badge.svg)](https://github.com/jupyter-xeus/cpp-terminal/actions/workflows/clang-format.yml)
+
 `CPP-Terminal` is a small and simple library for writing platform independent terminal applications. It works on Windows, MacOS and Linux and offers a simple programming interface. It
 supports colors, keyboard input and has all the basic features to write any
 terminal application.