Introduced a new `Endpoint` class in the `ReC.Domain.Entities` namespace to represent the `TBREC_CFG_ENDPOINT` database table. - Added Entity Framework annotations to map properties to database columns. - Defined properties for `Id`, `Active`, `Description`, `Uri`, `AddedWho`, `AddedWhen`, `ChangedWho`, and `ChangedWhen`. - Configured `Id` as the primary key with auto-generated values.