chore: ignore ansible-galaxy build artifacts

Add FILES.json and MANIFEST.json to .gitignore.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Aleksei Sviridkin <f@lex.la>

Author: lexfrei

.gitignore

@@ -4,3 +4,5 @@
 .ansible/
 __pycache__/
 *.pyc
+FILES.json
+MANIFEST.json