Add utility function and validation (used ValueSetEntry class instead of Dictionary)

[ni9999]

Fixes #75

Description

Implemented .add_code() and .load_from_json() utility function and to the ValueSet class Usage:

from healthchain.data_generators import CdsDataGenerator
from healthchain.base import Workflow
from healthchain.data_generators.value_sets.medicationcodes import MedicationRequestMedication
from healthchain.data_generators.value_sets.procedurecodes import ProcedureCodeSimple, ProcedureCodeComplex
from healthchain.data_generators.value_sets.conditioncodes import ConditionCodeSimple, ConditionCodeComplex
import json

med = MedicationRequestMedication()

med.add_code("123", "medication1")
med.load_from_json("./meds.json")

print(med.value_set)

proc = ProcedureCodeSimple()

proc.add_code("123", "simpleproc1")
proc.load_from_json("./proc_simple.json")    

print(proc.value_set)

proc = ProcedureCodeComplex()

proc.add_code("123", "complexproc1")
proc.load_from_json("./proc_complex.json")

print(proc.value_set)

cond = ConditionCodeSimple()    

cond.add_code("123", "simplecond1")
cond.load_from_json("./cond_simple.json")

print(cond.value_set)

cond = ConditionCodeComplex()

cond.add_code("123", "complexcond1")
cond.load_from_json("./cond_complex.json")

print(cond.value_set)

data_generator = CdsDataGenerator()

# Generate FHIR resources for use case workflow
data_generator.set_workflow(Workflow.encounter_discharge)
data = data_generator.generate()

print(json.dumps(data.model_dump()))

Changes Made

• Added ValueSetEntry class in base.py
• Changed default dictionaries in value_sets list to ValueSetEntry Class in medicationcodes, procedurecodes and conditioncodes.
• Changed value_sets to class variable instead of instance variable to persist the state of value_sets object.
• Added necessary changes to basegenerator.py so that it supports ValueSetEntry Class as well as Dictionaries.
• Changed test_procedure_generators.py -> x["code"] to x.code as x is now a class (not a dict)

Testing

Tested using the code in the description by adding codes directly and by json. Then reviewed generated data to see if these changes remain

Checklist

• [x] I have read the contributing guidelines
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes

Additional Notes