DOC: Initiate Sentinel 2 processing detailed design

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User story description: "As a Product Owner I would like to get the detailed description of the Sentinel-2 processing workflows so that I can prepare the design review."

Acceptance criteria:

• [ ] Sentinel-2 detailed architecture is described in the documentation
• [ ] Configuration elements are described
• [ ] Communication between services is described with message format and queues definition
• [ ] All communications are asynchronous, unless specified
• [ ] Micro services is the standard (no monolithic application)
• [ ] Error management is described
• [ ] a detailled design review meeting is organized

Definition of Done The User Story is considered completed when...

• Acceptance criteria are full filled
• Architecture documents and Workshops notes are available

[nleconte-csgroup]

CS_CCB_2023_w30 : Done.

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SYS_CCB_W30: The story is completed.