add an update method

[naronatrhea]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of the CDP4-SDK
• I have searched open and closed issues to ensure it has not already been reported

Description

Add an update function to update a value-set from its model-code

Steps to Reproduce

System Configuration

• CDP4 version:
  • CDP4-Scripts: 0.0.1
  • CDP4Common:
  • CDP4JsonSerializer:
  • CDP4Dal:
  • CDP4JsonFileDal:
  • CDP4ServicesDal:
  • CDP4WspDal:
  • Other:
• Environment (Operating system, version and so on):
• .NET Framework version:
• Additional information: