I am a christian myself and do not practice witchcraft but yes I believe witchcraft is a form of spirituality or a set of beliefs and a way to live your life such as wiccan or being a witch and so forth.
I believe spirituality is a generic term. I think spirituality is belief. Be that belief witchcraft, shamanism, religion, we are all spiritual beings. Spirituality is whatever you make it. I personally take beliefs from multiple sources and read a lot about witchcraft and shanism. Ask yourself, if YOU believe that witchcraft is spiritual then it is so