docs: added mermaid-diagram for visualization of architecture (#1086) #679

# to view logs

Run time

Learn about OS # on GitHub Actions

Job	Run time
ubuntu-20.04, py-3.9, node-20	16m 46s
windows-latest, py-3.9, node-20	26m 7s
macOS-12, py-3.9, node-20	25m 2s
release-notes	0s
release	0s
	1h 7m 55s