Api tests (#75)

* Added API Tests for Postman - BETTERZON-127 BETTERZON-128 BETTERZON-129 BETTERZON-130 BETTERZON-131 BETTERZON-132 BETTERZON-133 BETTERZON-134 BETTERZON-135

* Updated Postman Tests

Co-authored-by: Patrick <50352812+Mueller-Patrick@users.noreply.github.com>

README.md

@@ -5,6 +5,7 @@ Wiki: https://github.com/Mueller-Patrick/Betterzon/wiki
 
 # Code Quality
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/88e47ebf837b43af9d12147c22f77f7f)](https://www.codacy.com/gh/Mueller-Patrick/Betterzon/dashboard?utm_source=github.com&utm_medium=referral&utm_content=Mueller-Patrick/Betterzon&utm_campaign=Badge_Grade)
+[![Code Coverage](https://img.shields.io/badge/coverage-82%25-green)](https://ci.betterzon.xyz)
 
 # Project Status
 [![Website Status](https://img.shields.io/website?label=www.betterzon.xyz&style=for-the-badge&url=https%3A%2F%2Fwww.betterzon.xyz)](https://www.betterzon.xyz)