Describe the algorithm lifecycle for OGC AP

[JanssenBrm]

The documentation should describe the algorithm's life going from the development of an OGC AP to making it available as a service through an OGC API Process and the ESA Network of Resources. The flows from https://github.com/ESA-APEx/apex_design/blob/main/propagation_flowcharts.qmd can serve as input for this ticket.