Adding the solution for Josephus Problem in c++

[nabeel001]

Problem

• The Famous Josephus problem

Solution

• Provided the solution to the Josephus Problem in C++

Changes proposed in this Pull Request :

• 1. Added the solution to the problem in c++

Other changes

• 1. Also added the practice link for the same

[fineanmol]

@nabeel001 Please Star ⭐️ the repo to earn "hacktober-accepted" label for the event.

[nabeel001]

starring ur repository is useless as its excluded from hacktoberfest as it is not matching their guidelines