This is a feature proposal

Description

Admins need to relate proposals to results and in many occasions there are thousands of proposals. The current method is a dropdown menu, but it is unusable when there is a large number of proposal to be related to.

Specs

• Admins should be able to search proposals and link them to a result in an agile manner from the admin panel by entering the ID of the proposal and automatically using autocompletion. Like mentioning issues on github.
• The list of related proposals needs to be displayed once selected.
• Admins need to be able to un-relate a proposal from the list of related proposals from admin.
• When a proposal is related from the result this proposal should automatically have the label Accepted.

• NOTE: we are going to need this feature to be usable for the relation between proposals-components (@decidim/lot-core take this into account please!)