String Algorithm updated

[thsubaku9]

Description of new feature, or changes

Added Dice Coefficient, Knuth Morris Pratt, and Rabin Karp

Checklist

• [ ] Your branch is up-to-date with the base branch
• [ ] You've included at least one test if this is a new feature
• [ ] All tests are passing

Related Issues and Discussions

Issue #8

People to notify

@manrajgrover @umairnadeem @giancarloGiuffra