feat: update Qodana configuration to disable failure conditions and improve build stability

refactor: enhance Bilateral and SMA indicators to handle edge cases and improve state management
refactor: clean up whitespace and formatting in various test files for consistency

lib/statistics/linreg/LinReg.Validation.Tests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using System.Runtime.CompilerServices;
 using Xunit;
@@ -58,5 +58,4 @@ public sealed class LinRegValidationTests : IDisposable
 
         ValidationHelper.VerifyData(r2Series, skender, x => x.RSquared, tolerance: ValidationHelper.DefaultTolerance);
     }
-
 }

lib/statistics/stddev/StdDev.Validation.Tests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using Xunit;
 using QuanTAlib;
@@ -127,5 +127,4 @@ public class StdDevValidationTests
             }
         }
     }
-
 }

lib/statistics/variance/Variance.Validation.Tests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using Xunit;
 using QuanTAlib;
@@ -131,5 +131,4 @@ public class VarianceValidationTests
             }
         }
     }
-
 }