[DMN Designer] Boxed expressions - Decision Table - Output clause - Creating Decision Table, sub-columns are auto-created for structured type

When creating a decision table, output clauses columns should be created based on the type of the output node.
This is what we are already doing for the input columns, that are created based on the type of the input node.

Acceptance criteria

• Output ref is a simple built in type
• Output ref is simple but custom type
• Output ref is a structure with simple type fields
• Output ref is structure with custom type type fields

The flow for the input columns is described in the GIF below: