[BUG] (multiple) Change api specs to use camelCase

[krobasky]

Which repo (e.g., tx-logging)? pds, pdspi-guidance-example, pdspi-

Expected Behavior All the API parameters should be using camelCase

Actual Behavior we have some _ here and there

Information

Please replace:

• settings_requested with settingsRequested
• fhir_piid with fhirPiid
• mapper_piid with mapperPiid
• settings_used with settingsUsed close this ticket when the above replacements have been made in the following repo's, dockerhub containers successfully build, Hong has been notified to deploy on stage-pds, and the updates test out ok.
• [ ] pds (pds/guidance, pds/patientVariables)
• [ ] guidance (pdspi-guidance-example/guidance)
• [ ] pds-cdm-specs (as needed)
• [ ] CDM
• [ ] other guidance plugins

[rajshruti18]

Duplicate of #237