feat(data/zmod/quotient): Multiplicative version of `zmultiples_quotient_stabilizer_equiv` (#13948)
feat(data/zmod/quotient): Multiplicative version of `zmultiples_quotient_stabilizer_equiv` (#13948)

This PR adds a multiplicative version of `zmultiples_quotient_stabilizer_equiv`.





leanprover-community/mathlib,leanprover-community/mathlib