What do you mean by run a job in this package? Do you want to provide a job that others can use? Or you actually want to dispatch a job (maybe even to the queue) automatically when someone calls a method of your package?
If that last one is the case, you need to include illuminate/bus as a dependency in your composer.json. After that, you can dispatch a job like so in your package
app(Dispatcher::class)->dispatch($job);
Of course, you can also dependency inject the Dispatcher class in the place where you call this method, but this should put you in the direct direction ;)