Add the random number code of favourite language

[PandiyanCool]

This repo is to maintain a collection of code with various programming language which can generate a random within the given range.

Make sure you don't duplicate the existing code or language.

Add a comment before sending PR.

Thanks in advance.

[1ntEgr8]

@PandiyanCool I'll give it a go

[newvertex]

I've sent a PR for rust lang