utils: include Fetch-Dependencies step in build.ps1 time tracking (#78976)

Build bot runtimes are very long and not fully transparent right now. In addition to the steps for build and test, we should keep an eye on Fetch-Dependencies.

Author: weliveindetail

utils/build.ps1

@@ -718,6 +718,11 @@ function Fetch-Dependencies {
 
   if ($SkipBuild -and $SkipPackaging) { return }
 
+  $Stopwatch = [Diagnostics.Stopwatch]::StartNew()
+  if ($ToBatch) {
+    Write-Host -ForegroundColor Cyan "[$([DateTime]::Now.ToString("yyyy-MM-dd HH:mm:ss"))] Fetch-Dependencies..."
+  }
+
   $WiXURL = "https://www.nuget.org/api/v2/package/wix/$WiXVersion"
   $WiXHash = "DF9BDB347183716F82EFE2CECB8C54BB3554AA907A69F47A41741D6FA4D0A754"
   DownloadAndVerify $WixURL "$BinaryCache\WiX-$WiXVersion.zip" $WiXHash
@@ -859,6 +864,19 @@ function Fetch-Dependencies {
       }
     }
   }
+
+  if (-not $ToBatch) {
+    Write-Host -ForegroundColor Cyan "[$([DateTime]::Now.ToString("yyyy-MM-dd HH:mm:ss"))] Fetch-Dependencies took $($Stopwatch.Elapsed)"
+    Write-Host ""
+  }
+  if ($Summary) {
+    $TimingData.Add([PSCustomObject]@{
+      Arch = $BuildArch.LLVMName
+      Platform = 'Windows'
+      Checkout = 'Fetch-Dependencies'
+      "Elapsed Time" = $Stopwatch.Elapsed.ToString()
+    })
+  }
 }
 
 function Get-PinnedToolchainTool() {