Add managed codec DSP and initial control server

dotnet/build-native.ps1

@@ -0,0 +1,18 @@
+param(
+    [string]$BuildDirectory = "$PSScriptRoot/artifacts/native-build",
+    [string]$RuntimeIdentifier = [System.Runtime.InteropServices.RuntimeInformation]::RuntimeIdentifier,
+    [string]$Generator,
+    [string]$CCompiler
+)
+
+$ErrorActionPreference = 'Stop'
+$configure = @('-S', "$PSScriptRoot/native", '-B', $BuildDirectory,
+    '-DCMAKE_BUILD_TYPE=Release', "-DVOICECAT_DOTNET_RID=$RuntimeIdentifier")
+if ($Generator) { $configure += @('-G', $Generator) }
+if ($CCompiler) { $configure += "-DCMAKE_C_COMPILER=$CCompiler" }
+& cmake @configure
+if ($LASTEXITCODE) { throw "Native configure failed: $LASTEXITCODE" }
+& cmake --build $BuildDirectory --config Release --target voicecat_media --parallel 2
+if ($LASTEXITCODE) { throw "Native build failed: $LASTEXITCODE" }
+& cmake --install $BuildDirectory --config Release --component DotnetMedia --prefix "$PSScriptRoot/artifacts/native"
+if ($LASTEXITCODE) { throw "Native staging failed: $LASTEXITCODE" }