[PHP] - add support for PIE command

[vencakrecl]

Description

There is a new way to install an extension for PHP via the pie command. It's a replacement for the old pecl command. It would be good to have support for it. See https://github.com/php/pie.

Additional context

see https://github.com/php/pie/blob/main/docs/extension-maintainers.md.

pie install google/ext-protobuf

The issue also exists for gRPC ext, see grpc/grpc#38209