move top-level modules into a real package

chromy/main.py

@@ -0,0 +1,16 @@
+from __future__ import annotations
+
+from dotenv import load_dotenv
+
+from chromy.cli_app import execute_command
+from chromy.cli_parser import build_parser
+
+
+def main() -> int:
+    load_dotenv()
+    args = build_parser().parse_args()
+    return execute_command(args)
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())