Add Vortex Indicator implementation and documentation

- Implemented Vortex Indicator in Vortex.cs, including calculation logic and event handling.
- Added detailed documentation for Vortex Indicator in Vortex.md, covering historical context, algorithm, outputs, and trading interpretation.
- Updated oscillators index to include TTM Wave indicator.
- Added TTM Wave documentation with algorithm and trading interpretation.
- Updated reversals index to include TTM Scalper Alert indicator.
- Added TTM Scalper Alert documentation with algorithm and trading strategy.
- Updated NDepend badges to reflect increased code metrics (classes, methods, lines of code, public types, comments, and complexity).

lib/dynamics/vortex/Vortex.Quantower.cs

@@ -0,0 +1,55 @@
+using System.Drawing;
+using System.Runtime.CompilerServices;
+using TradingPlatform.BusinessLayer;
+
+namespace QuanTAlib;
+
+[SkipLocalsInit]
+public sealed class VortexIndicator : Indicator, IWatchlistIndicator
+{
+    [InputParameter("Period", sortIndex: 1, 2, 1000, 1, 0)]
+    public int Period { get; set; } = 14;
+
+    [InputParameter("Show cold values", sortIndex: 21)]
+    public bool ShowColdValues { get; set; } = true;
+
+    private Vortex _vortex = null!;
+    private readonly LineSeries _viPlusSeries;
+    private readonly LineSeries _viMinusSeries;
+
+    public static int MinHistoryDepths => 0;
+    int IWatchlistIndicator.MinHistoryDepths => MinHistoryDepths;
+
+    public override string ShortName => $"Vortex {Period}";
+    public override string SourceCodeLink => "https://github.com/mihakralj/QuanTAlib/blob/main/lib/dynamics/vortex/Vortex.Quantower.cs";
+
+    public VortexIndicator()
+    {
+        OnBackGround = true;
+        SeparateWindow = true;
+        Name = "Vortex";
+        Description = "Vortex Indicator identifies trend direction using VI+ and VI-";
+
+        _viPlusSeries = new LineSeries(name: "VI+", color: Color.Green, width: 2, style: LineStyle.Solid);
+        _viMinusSeries = new LineSeries(name: "VI-", color: Color.Red, width: 2, style: LineStyle.Solid);
+
+        AddLineSeries(_viPlusSeries);
+        AddLineSeries(_viMinusSeries);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnInit()
+    {
+        _vortex = new Vortex(Period);
+        base.OnInit();
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected override void OnUpdate(UpdateArgs args)
+    {
+        _vortex.Update(this.GetInputBar(args), args.IsNewBar());
+
+        _viPlusSeries.SetValue(_vortex.ViPlus.Value, _vortex.IsHot, ShowColdValues);
+        _viMinusSeries.SetValue(_vortex.ViMinus.Value, _vortex.IsHot, ShowColdValues);
+    }
+}