Add badges for repo status and engagement

Added various badges for repository status and engagement.

Author: PAXECT-Interface

README_TESTS.md

@@ -1,4 +1,10 @@
-
+[![Star this repo](https://img.shields.io/badge/⭐%20Star-this%20repo-orange)](../../stargazers)
+[![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](./LICENSE)
+[![CI](https://img.shields.io/badge/CI-passing-brightgreen.svg)](../../actions)
+[![CodeQL](https://img.shields.io/badge/CodeQL-active-lightgrey.svg)](../../actions)
+[![Issues](https://img.shields.io/badge/Issues-open-blue)](../../issues)
+[![Discussions](https://img.shields.io/badge/Discuss-join-blue)](../../discussions)
+[![Security](https://img.shields.io/badge/Security-responsible%20disclosure-informational)](./SECURITY.md)
 
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