test: enhance e2e test docs, config, and screenshot handling (#2012)

Co-authored-by: Harmanpreet Kaur <v-harmanpkau@microsoft.com>

Author: Harmanpreet-Microsoft

tests/e2e-test/config/__init__.py

@@ -0,0 +1 @@
+# This file makes the config directory a Python package

tests/e2e-test/config/constants.py

@@ -19,7 +19,7 @@
 # note: may have to remove 'tests/e2e-test' from below when running locally
 json_file_path = os.path.join(
     repo_root, "tests/e2e-test", "testdata", "golden_path_data.json"
-)
+    )
 
 # Load questions from JSON file
 with open(json_file_path, "r") as file: