Add guidelines on how to creat Dapr styled mermaid diagrams #5049
Description
What content needs to be created or modified?
A guide for docs contributors on how to format mermaid diagrams in the markdown pages.
Describe the solution you'd like
- Explanation what is part of a global mermaid theme configuration
- Provide recommended practices for Dapr Docs diagrams with examples.
Where should the new material be placed?
https://docs.dapr.io/contributing/docs-contrib/contributing-docs/