Enhance code quality and stability across various modules

- Updated .coderabbit.yaml to exclude additional file types from reviews, improving the focus on relevant code changes.
- Modified scanner.sh to handle test failures more gracefully, ensuring that analysis stops on test failures and improving logging.
- Improved sonarscanner.sh to ensure build and test failures are properly reported, enhancing CI reliability.
- Refined SimdExtensions.cs documentation for clarity on variance calculation methods.
- Cleaned up TSeries.Tests.cs by simplifying the test structure and ensuring proper namespace usage.
- Fixed potential issues in tseries.cs by ensuring correct handling of DateTime values.
- Enhanced CsvFeed.cs to improve error handling during CSV parsing, ensuring robustness against malformed data.
- Updated GBM.cs to correctly calculate volume in the current bar, ensuring accurate simulation.
- Adjusted index.html to use globalThis for better compatibility across environments.
- Refined quantalib.csproj to exclude unnecessary files from compilation, streamlining the build process.
- Added comprehensive tests for the Mama class to ensure correct behavior during updates and state management.
- Improved error handling in various trend classes (Kama, Dema, Ema, T3, Tema, Wma) to ensure NaN values are managed correctly.
- Removed redundant Mama.Repro.Tests.cs file and consolidated tests into Mama.Tests.cs for better organization.
- Enhanced T3 and Tema classes to maintain state integrity during updates, particularly with NaN values.

.github/sonarscanner.sh

@@ -28,12 +28,19 @@ dotnet sonarscanner begin \
 
 echo "==> Building solution..."
 dotnet build --no-incremental
+if [ $? -ne 0 ]; then
+    echo "Error: Build failed"
+    exit 1
+fi
 
 echo "==> Running tests with coverage..."
 mkdir -p "$COVERAGE_DIR"
-# Run tests with both formats if possible, or sequentially
 dotnet test --no-build --collect:"XPlat Code Coverage" \
     -- DataCollectionRunSettings.DataCollectors.DataCollector.Configuration.Format=lcov,opencover
+if [ $? -ne 0 ]; then
+    echo "Error: Tests failed"
+    exit 1
+fi
 
 # Copy coverage to Qodana directory
 find . -name "coverage.info" -exec cp {} "$COVERAGE_DIR/" \;