Jacobi Test Code in mojo

Replicates the 3D Jacobi iterations benchmark in mojo (https://bitbucket.org/antonl22/jacobitestcode/src/master/).

v0.1.3

• readme correction

v0.1.2

• small simd correction, cleaning

v0.1.1

• README file aded

v0.1.0

• v0.1.0 does it only for 1 thread with SIMD using memory managment via pointers.