Add sorting algorithms along with their documentions

[Rhythm408]

Description of the problem

Adding the various sorting algorithms such as Quick, Merge along with their documentation for better understanding.

Example of the problem

Quick sort -

1. Algorithm
2. Code
3. Explanation document.

References/Other comments

[anupdhoble]

I know how to fix this , So would like to work on this project. Please assign it to me under GSSOC'23 @Rhythm408

[Jasmineck]

Hello @Rhythm408 I am familiar with this topic and believe I can do the task efficiently. Can you please assign this project to me with tag GSSOC'23 .

[YASH-YADAV-dynamo]

I can surely do this task , please assign me this under GSOOC'24 @Rhythm408