Allow `destroy` routes to point at `update` actions.

[jimsynz]

Is your feature request related to a problem? Please describe.
My resource has the following update action:

update :close do
  change set_attribute(:status, "closed")
end

When exposing it via JSON:API I think the most reasonable thing to do is expose it as a DELETE endpoint.

Describe the solution you'd like
Allow delete route entities to accept update actions in addition to destroy and generic actions.

Describe alternatives you've considered

routes do
  base "/tickets"
  patch :close, route: "/:id/close"
end

Express the feature either with a change to resource syntax, or with a change to the resource interface

routes do
  base "/tickets"
  delete :close
end

Additional context
🐚

[zachdaniel]

Makes sense to me. In the short term, you could make your update action a destroy action with `soft? true.

destroy :close do
  soft? true
  change set_attribute(:status, "closed")
end