[orchestra2md] Output valid value list within field definition

[donmendelson]

Currently, orchestra2md always outputs codes in a codeset table separate from a field definition. This follows the Orchestra XML schema. Alternatively, it could output a few valid values directly in the field definition or for a fieldRef within a message or component. See example below. md2orchestra already parses this format. Also, this format would be natural for many users who may not be familiar with the concept of a codeset.

Counterarguments to consider:

• How many codes can be listed within a table cell? This works ok for a few, but would be unwieldy for a long list. Markdown table cells do not support internal line breaks; a break starts a new table row.
• An advantage of a separate codeset table is it has room for documentation of each code.

Name	Tag	Presence	Values
NoParties	453
PartyID		required
PartyIDSource
PartyRole		required	1=ExecutingFirm 2=BrokerOfCredit