Add patient gender identity field to bulk results uploader

[mehansen]

blocks #7461

Description

Add the ability to submit patient gender identity in the CSV bulk results uploader. This is the final field needed to fully support HIV and HIV AOE in the bulk results uploader.

Proposed solution

• add new patient_gender_identity field to results bulk upload
• add validation to accept only these values:

"F", "female",
"M", "male",
"NB", "non binary",
"TM", "trans man",
"TW", "trans woman",
"O", "other",
"R", "refused"

• all of the accepted values should get mapped appropriately in the FHIR bundle (same spot that’s used for patient gender identity for single-entry)
• I think the field should be optional since it’s optional for single-entry, but we could potentially make it required for certain conditions (can discuss in sync)