Merge helpers function from node, boost, python. (#2)

* setup boost helpers

* add ci for pull requests

* pester for ci

* resolving issue with pester 5

* remove Output flag

* check tests with 4 version

* try common tests variant

* added requires

* move to 5 version

* try to add assert module

* fix scope

* use new regex for python

* fix regex in tests

* Pester 4.10.1

* EnableExit

* fix synopsys

* fix creating tar archive

Co-authored-by: Dmitry Shibanov <v-dmshib@microsoft.com>
Co-authored-by: Maxim Lobanov <v-malob@microsoft.com>

win-vs-env.psm1

@@ -0,0 +1,48 @@
+###
+# Visual Studio helper functions
+###
+
+function Get-VSWhere {
+    $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe";
+
+    if (-not (Test-Path $vswhere )) {
+        [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
+        $vswhere = ".\vswhere.exe"
+        $vswhereApiUri = "https://api.github.com/repos/Microsoft/vswhere/releases/latest"
+        $tag = (Invoke-RestMethod -Uri $vswhereApiUri)[0].tag_name
+        $vswhereUri = "https://github.com/Microsoft/vswhere/releases/download/$tag/vswhere.exe"
+        Invoke-WebRequest -Uri $vswhereUri -OutFile $vswhere | Out-Null
+    }
+
+    return $vswhere
+}
+
+function Invoke-Environment
+{
+    Param
+    (
+        [Parameter(Mandatory)]
+        [string]
+        $Command
+    )
+
+    & "${env:COMSPEC}" /s /c "`"$Command`" -no_logo && set" | Foreach-Object {
+        if ($_ -match '^([^=]+)=(.*)') {
+            [System.Environment]::SetEnvironmentVariable($matches[1], $matches[2])
+        }
+    }
+}
+
+function Get-VSInstallationPath {
+    $vswhere = Get-VSWhere
+    $installationPath = & $vswhere -prerelease -legacy -latest -property installationPath
+
+    return $installationPath
+}
+
+function Invoke-VSDevEnvironment {
+    Write-Host "Invoke-VSDevEnvironment had been invoked"
+    $installationPath = Get-VSInstallationPath
+    $envFilepath = Join-Path $installationPath "Common7\Tools\vsdevcmd.bat"
+    Invoke-Environment -Command $envFilepath
+}