chore(project): 📝 Add README file

README.md

@@ -0,0 +1,6 @@
+# Teilchensammler
+
+This is a little TUI based on [Textual] for entering new Teilchen and for
+searching for existing Teilchen.
+
+

pyproject.toml

@@ -24,6 +24,7 @@ classifiers = [
   "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
   "Programming Language :: Python :: 3 :: Only",
   "Topic :: Utilities",
+  "Topic :: Terminals",
 ]
 
 [project.urls]