Added Scientific Calculator

[apu52]

Description

Hello Sir, I have added my Scientific Calculator PR in this repo. Please take a look at my PR.

Related Issue

• Closes #4

Type of Change

Please check the type of change that applies to your PR:

• [ ] Bug Fix
• [ ] New Feature
• [ ] Enhancement (improvements, refactoring, etc.)
• [ ] Documentation Update
• [X] Other (please specify): New Project

Checklist

Before submitting your pull request, please ensure you've completed the following:

• [X] I have read the CONTRIBUTING.md document and followed the contribution guidelines.
• [X] My code follows the project's coding standards.
• [X] I have added or updated the necessary documentation (if applicable).
• [X] My changes do not introduce any new linting or test errors.
• [X] All new and existing tests have passed.
• [X] I have reviewed my code to ensure its quality.

Screenshots (if applicable)

Additional Information

Please review my PR under APERTRE

Author's Note

[apu52]

@debarshee2004 I have added my PR to this repo .Please take a review & if possible pls Merge it under APERTRE.

[debarshee2004]

Well done @apu52 . Best of luck and happy coding.

[apu52]

@debarshee2004 Thank you for merging the PR. Can you please also add the labels of APERTRE in this PR