Remove frontend, example outputs, and config examples from PR

- Remove frontend/ directory from tracking
- Remove example_eval_output/ directory from tracking
- Remove prompts.md and config_examples.yaml from tracking
- Update .gitignore to include config_examples.yaml
- Files remain in local directory but are not part of the PR

Author: vikalluru

industries/predictive_maintenance_agent/.gitignore

@@ -1,5 +1,6 @@
 # Misc
 config_examples.yml
+config_examples.yaml
 env.sh
 frontend/
 prompts.md