Add usage with angular to documentation

**Is your feature request related to a problem? Please describe.**
I don't know how to use biotope element with angular.

**Describe the solution you'd like**
A clear and concise description of how to use biotope element in a angular project

No documentation file or test is named. Start by locating the existing usage documentation and examples, then review the project’s Angular integration context. Done means the documentation clearly explains how to use biotope element in an Angular project.

Written by the indexing model from the issue text.