test: setup common stability and robustness properties tracking

lib/volume/obv/Obv.Quantower.Tests.cs

@@ -221,4 +221,4 @@ public class ObvIndicatorTests
         double firstVal = indicator.LinesSeries[0].GetValue(0);
         Assert.Equal(0, firstVal);
     }
-}
+}

lib/volume/obv/Obv.Tests.cs

@@ -400,4 +400,4 @@ public class ObvTests
         obv.Update(new TBar(time.AddMinutes(4), 102, 112, 100, 110, 8000));
         Assert.Equal(11000, obv.Last.Value);
     }
-}
+}

lib/volume/obv/Obv.Validation.Tests.cs

@@ -159,4 +159,4 @@ public class ObvValidationTests
 
         ValidationHelper.VerifyData(streamingValues.ToArray(), spanOutput, 0, 100, 1e-9);
     }
-}
+}