Integrate JSON dictionary in the GDS

[thomas-bc]

F´ Version
Affected Component

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Feature Description

JSON Dictionary is here: #2263

In the GDS, we have a whole system to ingest the XML dictionary and make that data available through data types. We need to ingest the JSON dictionary instead.
Retiring the old data types and using the JSON data structure itself sounds like a reasonable design... will need to look into

[thomas-bc]

Consider implementing #2242 as part of this