chore: import upstream snapshot with attribution

.github/scripts/coverage_check/__init__.py

@@ -0,0 +1,19 @@
+"""
+Coverage utility package for GitHub Actions workflows.
+This package handles extracting coverage percentages, comparing them, and generating PR comments.
+"""
+
+# Import external dependencies
+import requests
+
+# Import main function for CLI usage
+from .__main__ import main
+
+# Import functions from extraction module
+from .extraction import extract_coverage, compare_coverage, run_coverage, set_verbose
+
+# Import functions from github_api module
+from .github_api import generate_comment, post_comment, set_github_output
+
+# Import functions from workflow module
+from .workflow import process_coverage_workflow