Add Thermal Expansion Calculator

[Sravyasaka]

DESCRIPTION
Any material undergoes thermal expansion according to the formula ΔL = αLΔT, where ΔL is the change in length, α is the thermal expansion coefficient, L is the initial length, and ΔT is the change in temperature. I can add this.

CHECKLIST

• I have checked the existing issues.
• I am a GSSOC'24 contributor.
• I follow the Contributing Guidelines of this project.

[github-actions]

Thank you for creating this issue! 🎉 We'll look into it as soon as possible. In the meantime, please make sure to provide all the necessary details and context. If you have any questions or additional information, feel free to add them here. Your contributions are highly appreciated! 😊

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[Sravyasaka]

@Sulagna-Dutta-Roy mam ,pls assign this issue to me.

[github-actions]

Hello @Sravyasaka! Your issue #2390 has been closed. Thank you for your contribution!