improve the OCM development guide

OCM now has some development guide, like the Architecture and Concepts in website https://open-cluster-management.io/concepts/architecture/ Also some development guides in each repo.

The feedback we receive from users who want to contribute is that:

I want to know the features/functions of the components, and their relationship.
After reading the website doc, I feel hard to understand the relationship of the components.
So many repos. Which one is related to my requirement?
As a new dev who want to contribute to ocm, is there any easy one for me to start with?

A better development guide could help to improve the user experience.

Create this issue to further discuss this topic. More ideas and suggestions are welcomed to comment on this issue.

open-cluster-management-io / community