Refactor event handling and improve argument validation across indicators

- Updated event handler signatures to use TValueEventArgs for consistency in Mama, Mgdi, Pwma, Rma, Sma, Ssf, Super, T3, Tema, Trima, Usf, Vidya, Wma, and Atr classes.
- Enhanced argument validation by specifying parameter names in exceptions for clarity.
- Adjusted tests to align with new event handler signatures.
- Improved code readability and maintainability by using structured records and lambda expressions.

lib/trends/blma/Blma.Validation.Tests.cs

@@ -42,7 +42,7 @@ public class BlmaValidationTests
         }
     }
 
-    private static List<double> CalculateReference(TSeries source, int period)
+    private static IReadOnlyList<double> CalculateReference(TSeries source, int period)
     {
         var result = new List<double>();
         var buffer = new List<double>();