reading template json file, and its class is made

Data/template/btFlexRequestInput.json

Data/template/btFlexRequestResult.json

Data/template/btFlexValidationInput.json

Data/template/btFlexValidationResult.json

Data/template/btPowerFlowInput.json

Data/template/btPowerFlowResult.json

Data/template/mtFlexRequestInput.json

Data/template/mtFlexRequestResult.json

Data/template/mtFlexValidationInput.json

Data/template/mtFlexValidationResult.json

Data/template/mtPowerFlowInput.json

Data/template/mtPowerFlowResult.json

examples/quickstart/run_nv_powerflow.log

examples/quickstart/run_nv_powerflow.py

pyvolt/export.py

run_nv_powerflow.log