Add Schema Validation to prime-fhir-converter

As a developer utilizing prime-fhir-converter,
I want the ability to validate any schemas I create
so that I can know if they are correctly formed. 

ReportStream schema validation for FHIR -> HL7v2: https://github.com/CDCgov/prime-reportstream/pull/14634

##### Acceptance Criteria
- [ ] prime-fhir-converter has the ability to validate it's conversion schemas