Add derivation defintions and values to OpenMCT plugin

[nttoole]

Issue: OpenMCT plugin only sends a packet's fields, but not its derivations.

Fix: Update OpenMct to include derivations in both

1. the telemetry dictionary definition
2. a packet instance

More details:

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1. Update the section that converts to the telemetry dictionary into an OpenMCT JSON structure
   

   AIT-Core/ait/core/server/plugins/openmct.py

   Line 215 in 184d8be

   def format_tlmdict_for_openmct(ait_tlm_dict):

I suspect there is enough commonality between fields and derivation objects (name, units, type) that you could just add another loop that iterates over a packet-def’s derivationmap, almost a parallel of what it does for fieldmap:

AIT-Core/ait/core/server/plugins/openmct.py

Line 226 in 184d8be

ait_pkt_fieldmap = ait_pkt_def.fieldmap

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2. Update the section that converts a telemetry packet
   

   AIT-Core/ait/core/server/plugins/openmct.py

   Line 207 in 184d8be

   ait_pkt_fieldmap = ait_pkt_def.fieldmap

Similar to part 1, add a second loop the parallels fieldmap but for derivationmap.