[CRUD] allow modifying width of custom form components

[Moripaf]

Summary

I'm trying the CRUD custom form component in the latest version and so far its great. however when trying to make my custom form component (its rather large) fullwidth in the form i notice there is no way. there are no slotProps for components with the "custom" type and no other way to make them fullWidth.
I appreciate any help or workaround. I'd do it myself but I'm new to toolpad and wouldn't know where to start

Examples

something like this:

 <Crud<Thing>
      dataSource={dataSource}
      dataSourceCache={dataSourceCache}
      rootPath={path}
      initialPageSize={20}
      slots={{
        list: {
          dataGrid: CustomDataGrid,
        },
      }}
      slotProps={{
       form: {
           custom: {
               fullWidth: true, // or width: 'third' | 'half' | 'full'
           }
       }
      }}
    />

Motivation

No response

Search keywords: CRUD form

[flyncx]

I want to pass a custom form component too, but can't do that unfortunately.

As far as I know the Crud components (including Edit, Show, Create and List) is deeply integrated with their dataSource and dataSourceCache implementation.

So, I plan to create my own Crud components, including the logic to call my backend.