* added kv processor form

* added lowercase processor form

* Added pipeline processor form

* added remove processor form

* added rename processor form

* Add script processor form

Also:

- Also refactored name of defaultBoolToUndef to undefinedIfValue
  to make it more broadly applicable for deserializing when
  default values have been provided
- Refactor to pass in original processor options value so that
  a form can initialize based on those values

* Updated the existing set processor form

- also fixed a bug that would render a horizontal line even if
  the form has no fields of its own (like the drop processor form)

* Added set_security_user form

* Added split processor form

- also added comments to set_security_user processor

* added sort processor form

* fix: duplicate i18n identifier

* added field to kv processor form for trim value

* replaced all editor heights with a clearer indication of the source of common heights

* remove unused translations

* remove unused translation

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>