Split queen-attack tests into creation and attacking
Split queen-attack tests into creation and attacking

As discussed here:
https://github.com/exercism/x-common/pull/211#issuecomment-202596536

rpottsoh/x-common,Vankog/problem-specifications,petertseng/x-common,ErikSchierboom/x-common,jmluy/x-common,exercism/x-common,Vankog/problem-specifications,kgengler/x-common,jmluy/x-common,ErikSchierboom/x-common,wobh/x-common,petertseng/x-common,kgengler/x-common,exercism/x-common,rpottsoh/x-common,jmluy/x-common