solution: Project Euler 35 (#1201)

* [CREATE] Problem 28 solution for Project Euler

* [UPDATE] Added an explanation for the formula used in the algorithm

* [CREATE] Added Problem 35 for Project-Euler

* [UPDATE] Little typo in the error string

* [UPDATE] Some algorithm changes

* [UPDATE] Fix test string

* [UPDATE] Change prime numbers generator to import a standard sieve
algorithm.

* [UPDATE] Change sieve algorithm implementation and now the solution
works well. Also added some optimizations