[Feature]: Documentation about the new LHCb workflows

[aldbr]

User Story

As a developer, I want a clear documentation and diagram about how pre/post commands should be designed, so that I can implement them with confidence without going back and forth too many times.

Feature Description

A mermaid diagram representing the current workflows as well as the new one would be enough.

Definition of Done

• a mermaid diagram representing the new LHCb workflows with pre/post process commands per type

Alternatives Considered

No response

Related Issues

No response

Additional Context

No response