Generate an Interface Design Description for SKAO-SRC interface.

This has previously been seen only as the SDP-SRC interface but we need to also address all interactions between the observatory and SRCs (even if the descriptions are sparse at the moment).

See: https://confluence.skatelescope.org/display/BCS/Bridging+Task+SOW%3A133+SRC+interface

Also, from the SDP CDR Panel Report:

SDP Is required to deliver Observatory Data Products to the SRCs.  Further, in the Construction Plan p. 8 it states “There are currently no explicit requirements to deploy SDP software or SDP variants at SRCs. However, SKAO have expressed a desire (through the pre-CDR OAR SDPPRECDR-270) for early engagement with SRCs and deployment of SDP software to SRCs which could benefit science commissioning of the telescopes by providing significant compute resources for commissioning.”

And, on p. 9 “Implementing the Commissioning and AIV support software product variant is included in the cost estimate of the SDP element, but not implementing any other Product Variants.”

The lack of a formal SDP – SRC ICD prevents a comprehensive elaboration of the DELIV component of SDP, as well as features in or characteristics of SDP that would enable effective use the SDP instances in SRCs.

Recommendation: Develop a “reference” SDP – SRC ICD in Bridging (even in advance of complete clarity within SKA on the funding, number, location, and capabilities of the SRCs) as a design and planning vehicle, and maintain it until it can be baselined.