Mark entity classes as obsolete; add table attributes

Marked Connection, Endpoint, EndpointAuth, EndpointParam, OutRes, Profile, and RecAction classes as obsolete with [Obsolete("Use Views instead.")]. Added or updated [Table] attributes to specify database tables and schemas for each class. This signals a transition to using Views instead of these entities.

src/ReC.Domain/Entities/Profile.cs

@@ -2,6 +2,7 @@
 
 namespace ReC.Domain.Entities;
 
+[Obsolete("Use Views instead.")]
 [Table("TBREC_CFG_PROFILE", Schema = "dbo")]
 public class Profile
 {