Draw the skeleton of the code integration for the flux calibration

Make a skeleton of the flux calibration code in the pipeline based on the current codes (calculateReferenceFlux and fluxCalibrate) and a set of the codes in the flux calibration studies. The document of the skeleton will be provided. 

 The attached file (fluxCalibrationFlow_20210525.pdf) is a current rough draft. In this version, the framework (or the process flow) in the existing codes in the pipeline is not considered yet. 

 This task is addressed with the help of Mineo-san.