Add Standard Deviation Channel (SDCHANNEL) implementation and documentation

- Implemented Sdchannel class for calculating standard deviation channels based on linear regression.
- Added detailed documentation for SDCHANNEL, including overview, calculation methods, and interpretation.
- Updated project files to include new numerics library components in Channels and Volatility projects.

.vscode/launch.json

@@ -1,11 +1,32 @@
 {
     "version": "0.2.0",
     "configurations": [
+
+        {
+            "name": "Build lib/quantalib.csproj (Debug net10.0)",
+            "type": "coreclr",
+            "request": "launch",
+            "program": "dotnet",
+            "args": [
+                "build",
+                "${workspaceFolder}/lib/quantalib.csproj",
+                "--configuration",
+                "Debug",
+                "--framework",
+                "net10.0"
+            ],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "console": "integratedTerminal",
+            "logging": {
+                "moduleLoad": false
+            }
+        },
         {
             "name": "Debug Tests",
             "type": "coreclr",
             "request": "launch",
-            "preLaunchTask": "build",
+            "preLaunchTask": "build-sln-debug",
             "program": "dotnet",
             "args": [
                 "test",
@@ -28,6 +49,25 @@
             "logging": {
                 "moduleLoad": false
             }
+        },
+        {
+            "name": "Build solution (Debug)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build-sln-debug",
+            "program": "dotnet",
+            "args": [
+                "build",
+                "${workspaceFolder}/QuanTAlib.sln",
+                "--configuration",
+                "Debug"
+            ],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "console": "integratedTerminal",
+            "logging": {
+                "moduleLoad": false
+            }
         }
     ]
 }