feat: add LeetCode problem 69

[Asp-Codes]

Here is the code for the problem 69 of leetcode as there are many ways to do it we programmers need to find the most optimal way to solve a problem statement so i used binary-search approach inorder to solve it. All suggestions are accepted!!!

Description of Change

References

Checklist

• Added description of change
• Added file name matches File name guidelines
• Added tests and example, test must pass
• Relevant documentation/comments is changed or added
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:

[alexpantyukhin]

Why you closed the previos MR? you could make changes in the context of the prev.

[CascadingCascade]

Why you closed the previos MR? you could make changes in the context of the prev.

Check out #1257 (which is closed by me for being a duplicate), they refuse to do that for whatever reason

[github-actions]

This pull request has been automatically marked as abandoned because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Panquesito7]

Thanks! 🚀