Ignore testing outputs

Author: CyrusNuevoDia

.gitignore

@@ -14,6 +14,8 @@
 /examples/nli/scone/compiled_program.dspy
 /examples/qa/hotpot/compiled_program.dspy
 /ScoNe/
+testing/outputs/
+testing/playbook.ipynb
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
@@ -58,4 +60,4 @@ assertion.log
 .mypy_cache
 dummy.csv
 docs/docs/**/*.json*
-*.index
+*.index