Support additional/other values for list fields #1233
Description
An optional but common requirement for list fields is that it should be possible enter other values in addition to the preconfigured ones.
On modelling level this could for example be implemented by introducing another DSL property which references a string field which then contains the actual values.
The UI could look like this:
As soon as Other is selected in the dropdown, the additional text input appears next to it.
This idea is from @gfr and he will look for improving the concept next.