Add flowcharts that explain the process on how to contribute to the Readme.md

[svelderrainruiz]

This is a request from Chris Cillino from the champions meeting.

[RobustoSystems]

It would be great if a Sequence Diagram was added to the Readme file too. The Sequence Diagram may be easier to read (more intuitive) than a flowchart.

For an introduction to Sequence Diagrams see:

1. The YouTube video embedded at: https://dqmh.org/tips-and-tricks-for-a-successful-dqmh-based-project/
2. https://www.youtube.com/watch?v=DaP6z2CsVhM
3. https://www.websequencediagrams.com/