Implement the makeDataGraph method on SqliteRegistry (mostly on SqlRegistry, actually) and the DataUnitMap class it returns as part of a QuantumGraph.

Unit tests for this work should be covered by DM-12649. They will probably need at least small modifications, as the test code will probably make some slightly incorrect assumptions about the details of the interface.

It is also likely that additional class attributes or other meta-information will need to be added to the concrete DataUnit classes to support this method.

Note that the full description of the logic behind makeDataGraph can be found in the Operations|SuperTask Pre-Flight and Execution|Preflight section of DMTN-056.