[Bug] Create campaign form - beneficiary and coordinator

[dplamenov]

Describe the bug Validation of the campaign creation form and the API server expect to have a beneficiaryId and a coordinatorId in the request, which should be UUID. But there is no possibility to enter UUIDs in the form. The form has only two modals that allow entering name, email and phone, but no UUIDs.

To Reproduce Steps to reproduce the behavior:

1. Go to campaigns/create
2. Try to create new campaign

Screenshots This is the modal for coordinator but form and API server expect coordinatorId:

@igoychev @kachar @imilchev

[kachar]

Kind of duplicate of https://github.com/podkrepi-bg/frontend/issues/362

[ani-kalpachka]

Closing the ticket as a duplicate of #364.