chore: repo cleanup and code quality improvements

- Remove global.json (SDK pinning unnecessary)

- Remove nuget.config, move MyGet source to .csproj RestoreAdditionalProjectSources

- Gitignore ndepend/ entirely, move badges to docs/img/

- Update README.md and docs/ndepend.md badge paths

- Add NDepend project property to QuanTAlib.slnx

- Expand .editorconfig ReSharper/diagnostic suppressions

- Use ArgumentOutOfRangeException instead of ArgumentException

- Use discard _ for unused event sender parameters

- Remove quantalib.code-workspace and sonar-suppressions.json

- Add filter signature SVGs

lib/volume/va/Va.cs

@@ -37,16 +37,10 @@ public sealed class Va : ITValuePublisher
 
     private State _s;
     private State _ps;
-
-    /// <inheritdoc/>
     public TValue Last { get; private set; }
-    /// <inheritdoc/>
     public bool IsHot => _s.Index >= 1;
-    /// <inheritdoc/>
     public static int WarmupPeriod => 1;
-    /// <inheritdoc/>
     public string Name { get; }
-    /// <inheritdoc/>
     public event TValuePublishedHandler? Pub;
 
     /// <summary>