FrankenPHP support

[FrankenPHP](https://frankenphp.dev/), a modern high-performance PHP application server is now [officially supported by the PHP Foundation](https://thephp.foundation/blog/2025/05/15/frankenphp/).

It would be nice to have support for this in lando.

I imagine the following configuration options:

```
config:
  php: '8.4'
  via: frankenphp
  php_extensions: gd intl zip
  worker_mode: true
```