add back git changes bc of ci failure

packages/http-client-python/eng/scripts/Check-GitChanges.ps1

@@ -0,0 +1,22 @@
+#Requires -Version 7.0
+
+param(
+    [string] $Exceptions
+)
+
+$ErrorActionPreference = 'Stop'
+Set-StrictMode -Version 3.0
+$packageRoot = (Resolve-Path "$PSScriptRoot/../..").Path.Replace('\', '/')
+. "$packageRoot/../../eng/emitters/scripts/CommandInvocation-Helpers.ps1"
+Set-ConsoleEncoding
+
+$diffExcludes = @(
+    "$packageRoot/package.json"
+    "$packageRoot/package-lock.json"
+) | ForEach-Object { "`":(exclude)$_`"" } | Join-String -Separator ' '
+
+Invoke-LoggedCommand "git -c core.safecrlf=false diff --ignore-space-at-eol --exit-code -- $diffExcludes" -IgnoreExitCode
+
+if($LastExitCode -ne 0) {
+    throw "Changes detected"
+}