feat: Update SHINNY IG to v1.1.0 and enhance HAPI FHIR validator with local code system support #732

[vinodaravind01]

• Updated SHINNY Implementation Guide (IG) version to 1.1.0.
• Enhanced HAPI FHIR validator:
  • Loaded LOINC codes for screening observation into validation support for the observation-codes value set.
  • Loaded SNOMED codes into validation support for the SNOMED code system.
  • Loaded ICD-10-CM codes into validation support for the ICD-10-CM code system.
  • All code systems are read from resources/reference folder.
• Loaded the v1.1.0 SHINNY IG package and dependency IG packages from resources/packages.
• Included external binding value sets for gender identity and sexual orientation from resources/vs.
• Removed remote UMLS SNOMED server access, all codes are now locally sourced.