Add C/C++ Implementation of Merge Sort

[MADHAV BAHL]

Add the needful here and submit a PR,
https://github.com/MadhavBahlMD/OOPS/tree/master/Sort/Merge_Sort

Also, do add the algorithm and explanation in Corresponding README + snippet of code

Format for README

Merge Sort

Some Details

Algorithm

Algorithm

Explanation

Explanation

C/C++ Code

Code Here

[MADHAV BAHL]

PR format:

• About
• Algorithm
• Explanation
• Code Snippets
• Screenshots as example

[Pragun Saini]

Added MergeSort too.