Adding python-versions-runner workflow (#137)

builders/python-versions-runner.ps1

@@ -0,0 +1,31 @@
+<#
+.SYNOPSIS
+Generate Python artifact.
+
+.DESCRIPTION
+Script that triggering and fetching the result of the "Build python package" workflows with provided python versions
+
+.PARAMETER Version
+Required parameter. Python versions to trigger builds for.
+
+.PARAMETER PublishRelease
+Switch parameter. Whether to publish release for built version.
+
+#>
+
+param(
+    [Parameter (Mandatory=$true, HelpMessage="Python version to trigger build for")]
+    [array] $Versions,
+    [Parameter (Mandatory=$false, HelpMessage="Whether to publish release for built version")]
+    [string] $PublishRelease
+)
+
+$summary = $Versions | ForEach-Object -Parallel { 
+    Import-Module "./builders/invoke-workflow.psm1"
+    Invoke-Workflow -Version $_ -PublishRelease $Using:PublishRelease
+}
+Write-Host "Results of triggered workflows:"
+$summary | Out-String
+if ($summary.Conclusion -contains "failure" -or $summary.Conclusion -contains "cancelled") {
+    exit 1
+}