Connection reference lookups are not typed

[misoeli]

Describe the bug
Also for the Connection Entity, the record1 and record2 attributes are being defined as any attributes as well, rather than maybe LookupAttribute

Expected behavior
The correct type would be set for these attributes

Environment

CRM/D365/CDS version: Version 1710 (9.2.21061.146) online
Tool version: 5.5.1

(Originally posted in issue #232 )

[misoeli]

I guess these fields should be Lookups to multiple entities - (Similar to a Customer field, which is typed as Xrm.LookupAttribute<"account" | "contact">). I think the field is created slightly different from "normal" lookups (seeing as it can hold a reference to any entity), which XrmDT does not support at the moment.