Remove egg-info from tracking and add to .gitignore

These are auto-generated setuptools artifacts that should not be
version-controlled. Tracking them caused unnecessary merge conflicts.

Author: ajnebro

.gitignore

@@ -15,3 +15,6 @@ optuna/optuna_nsgaii.db
 validation_results/
 tuning_output/
 *.prof
+
+# Auto-generated build artifacts
+*.egg-info/