Add one-to-many Action-Results relationship mapping

Added entity configuration to define a one-to-many relationship between Actions and Results. Each Action can have multiple Results, and each Result references its parent Action via the ActionId foreign key.

src/ReC.Infrastructure/RecDbContext.cs

@@ -262,6 +262,10 @@ public class RecDbContext(DbContextOptions<RecDbContext> options) : DbContext(op
             b.Property(e => e.PostprocessingQuery).HasColumnName("POSTPROCESSING_QUERY");
             b.Property(e => e.ErrorAction).HasColumnName("ERROR_ACTION_ID");
             b.Property(e => e.ErrorActionName).HasColumnName("ERROR_ACTION");
+
+            b.HasMany(e => e.Results)
+                .WithOne(r => r.Action)
+                .HasForeignKey(r => r.ActionId);
         });
 
         modelBuilder.Entity<ResultView>(b =>