Add params overload for EnsureProperties in EntityBaseOptions

Added a public EnsureProperties method accepting a params string[] in EntityBaseOptions. This provides a more convenient way to ensure multiple properties are configured, internally delegating to the existing IEnumerable-based method.

src/ReC.Infrastructure/Options/Shared/EntityBaseOptions.cs

@@ -11,4 +11,7 @@ public record EntityBaseOptions()
         if (missingProperties.Count != 0)
             throw new InvalidOperationException($"The following properties are not configured: {string.Join(", ", missingProperties)}");
     }
+
+    public void EnsureProperties(params string[] propertyNames) 
+        => EnsureProperties(propertyNames.AsEnumerable());  
 }