Create local Microsoft.WindowsPackageManager.Utils nuget (#4439)

This is a really simple script to locally create a
Microsoft.WindowsPackageManager.Utils nuget package and optionally add
it to an existing source. This is to help local development by not
requiring a new version to nuget.org.
###### Microsoft Reviewers: [Open in
CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/microsoft/winget-cli/pull/4439)

.gitignore

@@ -345,3 +345,6 @@ src/PowerShell/Microsoft.WinGet.Client/Crescendo/*.psm1
 
 # Dev PowerShell module path
 src/PowerShell/scripts/Module
+
+# Interop nuget
+src/WinGetUtilInterop/scripts/Nuget*

src/WinGetUtilInterop/scripts/CreateLocalNuget.ps1

@@ -0,0 +1,85 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+<#
+    .SYNOPSIS
+        Creates a local Microsoft.WindowsPackageManager.Utils nuget package and add it to a local nuget feed.
+#>
+
+[CmdletBinding()]
+param (
+    [Parameter(Mandatory)]
+    [ValidateSet("Debug", "Release", "ReleaseStatic")]
+    [string]
+    $Configuration,
+
+    [Parameter(Mandatory)]
+    [string]
+    $NugetVersion,
+
+    [string]
+    $BuildRoot = "",
+
+    [string]
+    $LocalNugetSource = ""
+)
+
+if ($BuildRoot -eq "")
+{
+    $BuildRoot = "$PSScriptRoot\..\..";
+}
+
+$local:repoPath = "$PSScriptRoot\..\..\..\"
+
+# Create all directories and copy files in location expected from the nuspec.
+# The paths contains 'release' but it whatever configuration the param is.
+$local:nugetWorkingDir = "$PSScriptRoot\NugetFiles"
+$local:x64NugetPath = "$nugetWorkingDir\Build.x64release\src\x64\Release\WinGetUtil"
+$local:x86NugetPath = "$nugetWorkingDir\Build.x86release\src\x86\Release\WinGetUtil"
+$local:manifestsNugetPath = "$nugetWorkingDir\Build.x64release\schemas\JSON\manifests"
+$local:interopNugetPath = "$nugetWorkingDir\Build.x64release\src\WinGetUtilInterop\bin\Release\netstandard2.1"
+$local:targetsNugetPath = "$nugetWorkingDir\Build.x64release\src\WinGetUtilInterop\build"
+
+Write-Host "Prepare nuget files"
+if (Test-Path $nugetWorkingDir)
+{
+    Remove-Item $nugetWorkingDir -Recurse
+}
+New-Item $nugetWorkingDir -ItemType directory | Out-Null
+New-Item $x64NugetPath -ItemType directory | Out-Null
+New-Item $x86NugetPath -ItemType directory | Out-Null
+New-Item $manifestsNugetPath -ItemType directory | Out-Null
+New-Item $interopNugetPath -ItemType directory | Out-Null
+New-Item $targetsNugetPath -ItemType directory | Out-Null
+
+function CopyFile([string]$in, [string]$out)
+{
+    $copyErrors = $null
+    Copy-Item $in $out -Force -ErrorVariable copyErrors -ErrorAction SilentlyContinue
+    $copyErrors | ForEach-Object { Write-Warning $_ }
+}
+
+CopyFile "$BuildRoot\x64\$Configuration\WinGetUtil\WinGetUtil.dll" "$x64NugetPath\WinGetUtil.dll"
+CopyFile "$BuildRoot\x64\$Configuration\WinGetUtil\WinGetUtil.pdb" "$x64NugetPath\WinGetUtil.pdb"
+CopyFile "$BuildRoot\x86\$Configuration\WinGetUtil\WinGetUtil.dll" "$x86NugetPath\WinGetUtil.dll"
+CopyFile "$BuildRoot\x86\$Configuration\WinGetUtil\WinGetUtil.pdb" "$x86NugetPath\WinGetUtil.pdb"
+CopyFile "$repoPath\src\WinGetUtilInterop\bin\$Configuration\netstandard2.1\WinGetUtilInterop.dll" "$interopNugetPath\WinGetUtilInterop.dll"
+CopyFile "$repoPath\src\WinGetUtilInterop\bin\$Configuration\netstandard2.1\WinGetUtilInterop.pdb" "$interopNugetPath\WinGetUtilInterop.pdb"
+CopyFile "$repoPath\src\WinGetUtilInterop\build\Microsoft.WindowsPackageManager.Utils.targets" "$targetsNugetPath\Microsoft.WindowsPackageManager.Utils.targets"
+CopyFile "$repoPath\WinGetUtil.nuspec" "$nugetWorkingDir\WinGetUtil.nuspec"
+Copy-Item "$repoPath\schemas\JSON\manifests" $manifestsNugetPath -Recurse
+
+# Create nuget
+Write-Host "Creating nuget package"
+$local:result = nuget pack .\NugetFiles\WinGetUtil.nuspec -Version $NugetVersion -OutputDirectory NugetOut
+$local:outFile = $result -match "nupkg"
+$outFile = $outFile[0]
+$outFile = $outFile.Substring($outFile.IndexOf("'") + 1, $outFile.LastIndexOf("'") - $outFile.IndexOf("'") - 1)
+Write-Host "Created $outFile"
+
+if ($LocalNugetSource -ne "")
+{
+    Write-Host "Adding $outFile to local nuget feed"
+    nuget add $outFile -Source $LocalNugetSource
+}
+