Provide Windows entry point build scripts

src/SourceBuild/content/build.cmd

@@ -0,0 +1,9 @@
+@echo off
+setlocal
+
+set _args=%*
+if "%~1"=="-?" set _args=-help
+if "%~1"=="/?" set _args=-help
+
+powershell -ExecutionPolicy ByPass -NoProfile -Command "& '%~dp0eng\build.ps1'" %_args%
+exit /b %ERRORLEVEL%

src/SourceBuild/content/eng/build.ps1

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+[CmdletBinding(PositionalBinding=$false)]
+Param(
+  [string][Alias('c')]$configuration = "Release",
+  [switch] $clean,
+  [switch][Alias('bl')]$binaryLog,
+  [switch][Alias('nobl')]$excludeCIBinarylog,
+  [switch] $ci,
+  [switch] $prepareMachine,
+  [switch] $help,
+  [Parameter(ValueFromRemainingArguments=$true)][String[]]$properties
+)
+
+function Get-Usage() {
+  Write-Host "Common settings:"
+  Write-Host "  -configuration <value>  Build configuration: 'Debug' or 'Release' (short: -c). [Default: Release]"
+  Write-Host "  -binaryLog              Output binary log (short: -bl)"
+  Write-Host "  -help                   Print help and exit"
+  Write-Host ""
+
+  Write-Host "Actions:"
+  Write-Host "  -clean                  Clean the solution"
+  Write-Host ""
+
+  Write-Host "Advanced settings:"
+  Write-Host "  -ci                     Set when running on CI server"
+  Write-Host "  -excludeCIBinarylog     Don't output binary log (short: -nobl)"
+  Write-Host "  -prepareMachine         Prepare machine for CI run, clean up processes after build"
+  Write-Host ""
+}
+
+. $PSScriptRoot\common\tools.ps1
+
+# Set the NUGET_PACKAGES dir so that we don't accidentally pull some packages from the global location,
+# They should be pulled from the local feeds.
+$env:NUGET_PACKAGES="$PSScriptRoot/.packages"
+
+function Build {
+  InitializeToolset
+
+  $bl = if ($binaryLog) { '/bl:' + (Join-Path $LogDir 'Build.binlog') } else { '' }
+
+  MSBuild "$PSScriptRoot\build.proj" `
+    $bl `
+    --tl:off `
+    /p:Configuration=$configuration `
+    @properties
+}
+
+try {
+  if ($clean) {
+    if (Test-Path $ArtifactsDir) {
+      Remove-Item -Recurse -Force $ArtifactsDir
+      Write-Host 'Artifacts directory deleted.'
+    }
+    exit 0
+  }
+
+  if ($help -or (($null -ne $properties) -and ($properties.Contains('/help') -or $properties.Contains('/?')))) {
+    Print-Usage
+    exit 0
+  }
+
+  if ($ci) {
+    if (-not $excludeCIBinarylog) {
+      $binaryLog = $true
+    }
+    $nodeReuse = $false
+  }
+
+  Build
+}
+catch {
+  Write-Host $_.ScriptStackTrace
+  Write-PipelineTelemetryError -Category 'Build' -Message $_
+  ExitWithExitCode 1
+}
+
+ExitWithExitCode 0