Add @template to container resolver functions

[idkCpp]

Currently when one gets an object by explicitly calling the container to instantiate an object the IDE knows nothing about the return value.

There are multiple similar discussions of the same tenor, so I'd like to start one for resolving methods and functions.

For example:

/**
 * Get the available container instance.
 *
 * @template T
 * @param  class-string<T>|string|null  $abstract
 * @param  array  $parameters
 * @return T|mixed|\Illuminate\Contracts\Foundation\Application
 */
function app($abstract = null, array $parameters = [])
{
    if (is_null($abstract)) {
        return Container::getInstance();
    }

    return Container::getInstance()->make($abstract, $parameters);
}

This would then also affect methods like Container::make, Container::makeWith, Container::resolve and the like.

[idkCpp]

oops, sorry, #41597 did not turn up in my initial search. Dup