change option field in dialog

when CLI generates dialog component, last field is option, each option has name and value, but its missing label, which means it's expect i18n and so far render long i18n property name.
place change 'name' to 'label' so option field should looks like:

        - name: option
          class: info.magnolia.ui.form.field.definition.SelectFieldDefinition
          label: Option
          options:
            - label: A
              value: a
            - label: B
              value: b