Create binarysearch.cpp

[SumanthBajjuri07]

Description:

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #issue_number_here

Type of change:

• [no ] Bug fix (non-breaking change which fixes an issue)
• [ yes] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ yes] This change requires a documentation update

Checklist:

• [ yes] My code follows the style guidelines of this project.
• [ yes] I have performed a self-review of my own code.
• [ yes] I have commented my code, particularly in hard-to-understand areas.
• [yes ] I have made corresponding changes to the documentation.
• [yes ] My changes generate no new warnings.
• [ no] I have added tests that prove my fix is effective or that my feature works.
• [ no] New and existing unit tests pass locally with my changes.
• [ no] Any dependent changes have been merged and published in downstream modules.

Screenshots / Video: