Feature/bcss 20436 calendar picker util markdown doc and docstrings (… #518

Job	Run time
Set CI/CD metadata	6s
Commit stage / Check Markdown format	2s
Commit stage / Check English usage	5s
Commit stage / Count lines of code	5s
Commit stage / Check file format	4s
Commit stage / Scan dependencies	20s
Commit stage / Scan secrets	7s
Test stage / Run Util Tests	19s
	1m 8s

Provide feedback