Add formatters module

src/contextgen/formatters/__init__.py

@@ -0,0 +1,7 @@
+"""Formatters module for output generation."""
+
+from contextgen.formatters.base import BaseFormatter
+from contextgen.formatters.json_formatter import JSONFormatter
+from contextgen.formatters.yaml_formatter import YAMLFormatter
+
+__all__ = ["BaseFormatter", "JSONFormatter", "YAMLFormatter"]