test: setup common stability and robustness properties tracking

lib/volatility/vov/Vov.Quantower.Tests.cs

@@ -326,4 +326,4 @@ public class VovIndicatorTests
         // During volatility regime change, VOV should typically increase
         Assert.True(transitionVal > 0, "Changing volatility regime should produce positive VOV");
     }
-}
+}

lib/volatility/vov/Vov.Tests.cs

@@ -644,4 +644,4 @@ public class VovTests
     }
 
     #endregion
-}
+}

lib/volatility/vov/Vov.Validation.Tests.cs

@@ -623,4 +623,4 @@ public class VovValidationTests
 
         Assert.Equal(0.5, result.Value, 8);
     }
-}
+}