.NET 9 update

docs/img/structure.md

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+graph TD
+    A[QuanTAlib] --> B[lib]
+    B --> C[core]
+    B --> D[averages]
+    B --> E[momentum]
+    B --> F[oscillators]
+    B --> G[errors]
+    B --> H[feeds]
+    B --> I[patterns]
+    B --> J[statistics]
+    B --> K[volatility]
+    B --> L[volume]
+
+    C --> C1[AbstractBase]
+    C --> C2[TBarSeries]
+    C --> C3[TSeries]
+    C --> C4[CircularBuffer]
+
+    D --> D1[EMA]
+    D --> D2[SMA]
+    D --> D3[WMA]
+
+    E --> E1[MACD]
+    E --> E2[ROC]
+    E --> E3[ADX]
+
+    F --> F1[RSI]
+    F --> F2[Stoch]
+    F --> F3[CCI]