Add SAREF alignment in Rec doc

[maximelefrancois86]

I volunteer to work on an alignment of SOSA/SSN with ETSI SAREF (Smart Applications REFerence ontology) https://saref.etsi.org/core/

[dr-shorthair]

That would be appreciated.

[rob-metalinkage]

Hi Maxime

please note also an activity in the OGC space based on profiling SOSA and other ontologies w.r.t. SAREF

https://github.com/opengeospatial/Agriculture-DWG/tree/main/aim_swg_charter

This will provide opportunities to test and promote such integrations, and will extend beyond the current joint WG charter.

[dr-shorthair]

This should be a priority now, particularly to also support the Usage Report for Actuation use-cases as well as the SOSA updates triggered by SAREF.

[dr-shorthair]

Any progress here @maximelefrancois86 ?

[maximelefrancois86]

Please review #206