Add output formatters

depaudit/output/json_formatter.py

@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+import json
+
+from depaudit.output import AuditResult, Formatter
+
+
+class JSONFormatter(Formatter):
+    def format(self, result: AuditResult) -> str:
+        output = result.to_dict()
+        return json.dumps(output, indent=2, default=str)