The relationship drawer should have multi-select

[ammarisrar]

When the appearance: drawer is set on relationship field, there should be multi-select checkboxes.

Example Use-case

Suppose we have hundreds of documents which need to be added to the relationship field. We can select the filter in the drawer, and select one entry, and then the drawer closes. To select another entry, the drawer opens, and the filter needs to be applied again. This is quite time-consuming for multiple records.

What can be done is that when we define a filter, we click the select all checkbox to select the filtered entries, and add their IDs all at once to the relationship field.