Support preventive campaigns

[tokland]

:pushpin: References

• Issue: Closes #?

:memo: Implementation

• [ ] Metadata: category type (options: preventive, reactive)
• [ ] Metadata: category option group to list all the antigens (category options) which are type-selectable
• [ ] Metadata: add category "campaign type" to categoryCombos "Required" which are rendered in an antigen tab
• [ ] UI step "Configure indicators": Show radio if the antigen is type-selectable.
• [ ] Custom form: use reactive (default) or preventive cocId, but do not render the corresponding header.

Metadata

:art: Screenshots

[tokland]

Superseded by https://github.com/EyeSeeTea/vaccination-app/pull/328