message: Fix check for existing extensions on windows
diff: @@ -52,9 +52,11 @@ Add-Log $tick "Composer" "Installed"
  Function Add-Extension($extension, $install_command, $prefix)
  {
  try {
  - $exist = Test-Path -Path C:\tools\php\ext\php_$extension.dll
  - if(!(php -m | findstr -i ${extension}) -and $exist) {
  - Add-Content C:\tools\php\php.ini "$prefix=php_$extension.dll"
  + $existing_extensions = Get-PhpExtension -Path C:\tools\php
  + $match = @($existing_extensions | Where-Object { $_.Name -like $extension })
  + if(!(php -m | findstr -i ${extension}) -and $match) {
  + $filename = $match."Filename".split('\')[-1]
  + Add-Content C:\tools\php\php.ini "`n$prefix=$filename"
  Add-Log $tick $extension "Enabled"
  } elseif(php -m | findstr -i $extension) {
  Add-Log $tick $extension "Enabled"
  