[DMN Designer] Data Types - Warnings - User must be warned when some operations affect other Data Types

1) When a Structure Data Type (with fields) is updated to a simple type (e.g. String, Number, Date, etc), a warn message must appear informing the user that the fields will be lost.

• tPerson
  • uuid
  • name
  • city (Structure) <-- If this data type is updated to "String", the "uuid" and "name" fields will be lost.
    • uuid
    • name

2) When a Data Type is removed, a warn message must appear informing the user that data types with the removed type will be removed too.

• tCity <-- If the user removes this Data Type
  • uuid
  • name

• tPerson
  • uuid
  • name
  • city (tCity) <-- This field will be removed too..
    • uuid <-- ..and consequently..
    • name <-- ..these two will be removed too.

Manual acceptance test

Check warning list all occurrences:

• Remove item definition used as part of other item definitions
  • Top level, all occurences removed
  • Nested level, top level definition remains
• Remove item definitions used as output data-type for decision node
• Remove item definition used as data-type for expression element (column, parameter, ...)