Fix Python path issue in coverage script

- Add current directory to Python path before calling django.setup()
- This fixes ModuleNotFoundError: No module named 'ivatar'
- The script now properly finds the ivatar module when running tests
- Coverage should now work correctly with Django test runner

scripts/run_tests_with_coverage.py

@@ -22,6 +22,9 @@ def main():
     print("Running tests with OpenTelemetry enabled...")
     print("==========================================")
 
+    # Add current directory to Python path
+    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
     # Setup Django
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "ivatar.settings")
     django.setup()