Consider having a `call` method instead of a `run` method in use cases

[nivisi]

If we create a call method in a class, the class becomes callable and we are able to use it like so:

class MyClass {
  void call();
}

final myClass = MyClass();

myClass(); // <——

We could use it with the use cases:

_myUseCase.run(); // instead of this

_myUseCase(); // we will use this.