[cwx-ppm] Create Version from Subtask

This post-function creates a new version based on a custom field for the related project.

Required information:

• Project Key Field: Select the custom field that contains the project key.
• Version Field: Select the custom field that contains the version number.
  
• Version Start Field: Select the custom field that contains the start date of a version.
• Version Release Custom Field: Select the custom field that contains the date of a version.
• Version Description Custom Field: Select the custom field that contains the description of a version.

Field to function parameter mapping: