Added BFS

[dragonman164]

Description

Related Issue

** Please don't create a Pull request without creating an issue first **

Fixes # [ISSUE]

Type of Change:

• Code
• Quality Assurance
• Documentation

Code/Quality Assurance Only

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update (software upgrade on readme file)

Motivation and Context

How Has This Been Tested?

Checklist:

• I read the CONTRIBUTING document before making this pull request
• My code follows the style guidelines of this project
• I have performed a self-review of my own code or materials
• I have commented my code or provided relevant documentation, particularly in hard-to-understand areas
• My change requires change to documentation
• I have updated documentation accordingly
• I have updated the requirements file
• My changes generate no new warnings
• My PR currently breaks something (fix or feature that would cause existing functionality to not work as expected)
• I have added tests to cover my changes
• All new and existing tests passed

Screenshots (if appropriate):

[Aryamanz29]

Some changes req @dragonman164

• Change PR title
• Link issue with PR
• Source should be written in python 3x and write unittest for the same