Add obsolete DbSets and transition to Views in RecDbContext

Several new DbSet properties were added to the RecDbContext
class, marked as `[Obsolete("Use Views instead.")]`. These
include `EndpointParams`, `OutRes`, `Connections`, `Endpoints`,
`EndpointAuths`, `Profiles`, and `RecActions`.

Non-obsolete DbSets such as `RecActionViews`, `ProfileViews`,
`RecResultViews`, `HeaderQueryResults`, `BodyQueryResults`,
and `RecResults` were also added or retained.

These changes indicate a shift towards using Views for database
operations while maintaining backward compatibility with the
older DbSet properties.

src/ReC.Infrastructure/RecDbContext.cs

@@ -9,6 +9,7 @@ namespace ReC.Infrastructure;
 public class RecDbContext(DbContextOptions<RecDbContext> options) : DbContext(options), IRecDbContext
 {
     #region DB Sets
+    [Obsolete("Use Views instead.")]
     public DbSet<EndpointParam> EndpointParams { get; set; }
 
     public DbSet<RecActionView> RecActionViews { get; set; }
@@ -17,20 +18,26 @@ public class RecDbContext(DbContextOptions<RecDbContext> options) : DbContext(op
 
     public DbSet<ResultView> RecResultViews { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<OutRes> OutRes { get; set; }
 
     public DbSet<HeaderQueryResult> HeaderQueryResults { get; set; }
 
     public DbSet<BodyQueryResult> BodyQueryResults { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<Connection> Connections { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<Endpoint> Endpoints { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<EndpointAuth> EndpointAuths { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<Profile> Profiles { get; set; }
 
+    [Obsolete("Use Views instead.")]
     public DbSet<RecAction> RecActions { get; set; }
 
     public DbSet<InsertObjectResult> RecResults { get; set; }