Binary search problem

[GundaSudarrshan]

What is the change?

Added a New Problem under Data Structures folder which is Finding the Peak_Element_Index_in_Mountain_Array Explained what is the Problem Explained the Solution in Java Using Binary Search

closes: #117

Checklist:

Before you create this PR, confirm all the requirements listed below by checking the checkboxes [x]:

• [x] I have followed the Code of Conduct.
• [x] I have checked there aren't other open Pull Requests for the same update/change.
• [x] I have you tested the code before submission.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] My changes generates no new warnings.
• [x] I'm HSOC( Hack_Club_Rait Summer of Code ) Contributor.

Screenshots (if any)

[GundaSudarrshan]

hey @Chaitalishetty I have modified file and added python code as well please check and update sooner

[Chaitalishetty]

LGTM!