Add keywords

pyproject.toml

@@ -7,6 +7,7 @@ authors = ["Christoph Knote <christoph.knote@med.uni-augsburg.de>"]
 readme = "README.md"
 homepage = "https://mbees.med.uni-augsburg.de/"
 repository = "https://mbees.med.uni-augsburg.de/gitlab/mbees/boxmox_pypackage"
+keywords = [ "atmosphere", "chemistry", "box model", "boxmox" ]
 classifiers = [
     "Programming Language :: Python :: 3"
     "Development Status :: 5 - Production/Stable"