Provide `service-id-string` for service ID parameters

[mglaman]

We can provide custom PHPStan PHPDoc types. This could help us replace the dynamic return type extension DrupalServiceDynamicReturnTypeExtension. This can allow us to validate known service names as arguments.

@phpstan-param service-name-string $id

Then, maybe, we can tie it into templates for returning the class object type.

Such as the following in a stub of \Drupal::service

@phpstan-param service-name-string<T> $id
@return T

If our extension to provide service-name-string is able to provide the value of T for the template, it might just work.

[mxr576]

Okay, so this is not yet implemented :)
(I have just had a need for something similar.)

[mglaman]

I started working on it and dead-ended. I may try to pick it back up. It's been a while