Create install-dotnet-windows.ps1

Author: OpenByteDev

.github/scripts/install-dotnet-windows.ps1

@@ -0,0 +1,16 @@
+param (
+    [string]$Version,
+    [string]$Arch
+)
+
+Invoke-WebRequest -Uri https://dot.net/v1/dotnet-install.ps1 -OutFile dotnet-install.ps1
+./dotnet-install.ps1 -Architecture $Arch -Channel $Version
+
+if ($Env:DOTNET_INSTALL_DIR) {
+    $dotnetRoot = $Env:DOTNET_INSTALL_DIR
+} else {
+    $dotnetRoot = Join-Path $Env:LOCALAPPDATA "Microsoft\dotnet"
+}
+
+$dotnetRoot >> $Env:GITHUB_PATH
+"DONET_ROOT=$dotnetRoot" >> $Env:GITHUB_ENV