test: setup common stability and robustness properties tracking

lib/volume/aobv/Aobv.Quantower.Tests.cs

@@ -157,4 +157,4 @@ public class AobvIndicatorTests
         Assert.Equal("Fast", indicator.LinesSeries[0].Name);
         Assert.Equal("Slow", indicator.LinesSeries[1].Name);
     }
-}
+}

lib/volume/aobv/Aobv.Tests.cs

@@ -353,4 +353,4 @@ public class AobvTests
         Assert.NotEqual(0, aobv.LastFast.Value);
         Assert.NotEqual(0, aobv.LastSlow.Value);
     }
-}
+}

lib/volume/aobv/Aobv.Validation.Tests.cs

@@ -202,4 +202,4 @@ public class AobvValidationTests
         Assert.True(risingFastCount > 20, $"Fast EMA should trend up in uptrend, rising count: {risingFastCount}");
         Assert.True(risingSlowCount > 15, $"Slow EMA should trend up in uptrend, rising count: {risingSlowCount}");
     }
-}
+}