Add Selection sort

[vstrimaitis]

Add the code for selectionsort in any language ( C, C++, Java, Go, Python or any other)

The code should be placed at code/sorting/selection_sort

[vstrimaitis]

Added implementation in C++: #85

[vaibhavsingh97]

@vstrimaitis Can i work on this?

[n0zg]

I will do the java version

[beatfreaker]

Added implementation in JavaScript #99

[vaibhavsingh97]

@n0zg Java version is already there
I will do in python

[RaiVaibhav]

@AdiChat added selection sort in ruby 165

[Guilhermeslucas]

I'm writing it in golang! Done!