feat(SIMPL-24642): migrate tests from 3 source repos with updated imports

tests/data_processing/conftest_utils.py

@@ -0,0 +1,7 @@
+"""Configuration utilities for testing."""
+
+import os
+import sys
+
+# Add src directory to path for imports
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', 'src'))