Enable Package Signing - fixes PrismLibrary#1470

.gitignore

@@ -202,3 +202,6 @@ UpgradeLog*.htm
 
 # Microsoft Fakes
 FakesAssemblies/
+
+# DotNet Tools
+**/build/.store/*

Source/build/Sign-Packages.ps1

@@ -0,0 +1,26 @@
+$currentDirectory = split-path $MyInvocation.MyCommand.Definition
+
+# See if we have the ClientSecret available
+if([string]::IsNullOrEmpty($Env:SignClientSecret)){
+    Write-Host "Client Secret not found, not signing packages"
+    return;
+}
+
+dotnet tool install --tool-path . SignClient
+
+# Setup Variables we need to pass into the sign client tool
+
+$appSettings = "$currentDirectory\appsettings.json"
+$fileList = "$currentDirectory\filelist.txt"
+
+$nupkgs = gci $Env:ArtifactDirectory\*.nupkg -recurse | Select-Object -ExpandProperty FullName
+
+foreach ($nupkg in $nupkgs){
+   Write-Host "Submitting $nupkg for signing"
+
+    .\SignClient 'sign' -c $appSettings -i $nupkg -f $fileList -r $Env:SignClientUser -s $Env:SignClientSecret -n 'Prism' -d 'Prism' -u 'https://github.com/PrismLibrary/Prism' 
+
+    Write-Host "Finished signing $nupkg"
+}
+
+Write-Host "Sign-package complete"

Source/build/appsettings.json

@@ -0,0 +1,13 @@
+{
+    "SignClient": {
+      "AzureAd": {
+        "AADInstance": "https://login.microsoftonline.com/",
+        "ClientId": "c248d68a-ba6f-4aa9-8a68-71fe872063f8",
+        "TenantId": "16076fdc-fcc1-4a15-b1ca-32c9a255900e"
+      },
+      "Service": {
+        "Url": "https://codesign.dotnetfoundation.org/",
+        "ResourceId": "https://SignService/3c30251f-36f3-490b-a955-520addb85001"
+      }
+    }
+  }

Source/build/filelist.txt

@@ -0,0 +1 @@
+**\Prism.*