Added a problem Filling Bucket (DP problem)

[sagarshaw800]

Summary

Provide an overview... added new problem named 'Filling Bucket'

Details

Add more context to describe your changes... It is a dynamic programming based problem.

References

Example

Checks

• [ ] Tested Changes.
• [ ] Stakeholder Approval.
• [ ] My pull request has a descriptive title (not a vague title like "Update index.md").
• [ ] My pull request targets the master branch of the repository.
• [ ] My code follows the established code style of the repository.
• [ ] I added tests for the changes I made (if applicable).
• [ ] I added or uploaded documentations (if applicable).
• [ ] I tried running the project locally and verified that there are no visible errors.

[soham4abc]

LGTM! well done @sagarshaw800