Cross Products of Vectors

[roeticvampire]

Is your feature request related to a problem? Please describe.
I was considering adding cross product calculation of vectors to the repository. Cross Product

Describe the solution you'd like
First, we create a vector class with three variables x,y,z and then add constructors and member functions for magnitude, dot product and cross product.

Additional context
Waiting to be assigned the issue so I can contribute 🙄

[roeticvampire]

Done with the implementation. Please review the same.