Adding Smith waterman Algorithm

[Mayureshd-18]

Issue no #1605

👨‍💻 Changes proposed

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• [x] My code follows the code style of this project.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

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[github-actions[bot]]

Thanks for your contribution we will soon check your PR @Mayureshd-18 :)

[Mayureshd-18]

@Kumar-laxmi Please review this PR.

[Mayureshd-18]

@Kumar-laxmi I have shifted the files from string to Dynamic programming as requested.

[Mayureshd-18]

@Kumar-laxmi Please review this PR and merge it