feat: support larastan's `model-property` type

[calebdw]

Not sure if you want to support this or not, but currently getting a warning for this:

    /** @return array{process: array<model-property<Process>, mixed>} */
    public function broadcastWith(): array { return []; }

[AJenbo]

It's a bit specialized but I'll give it some consideration

[calebdw]

at the very least just recognizing that it's a string would help suppress the warning, I don't necessarily care for specific model property checks

[AJenbo]

Alright I had a thought about it: https://github.com/AJenbo/phpantom_lsp/blob/main/docs/todo/laravel.md#l11-relation-dot-notation-string-completion-and-column-name-string-completion