Added Atomic Composition Calculator

[bharat-c27]

Fixes Issue🛠️

Closes #712

Description👨‍💻

The calculator determines the number of protons, neutrons, and electrons in an atom based on its atomic number, atomic mass, and charge. It supports both neutral atoms and ions.

I have also handled the error validation.

Type of Change📄

• New feature (non-breaking change which adds functionality)

Checklist✅

• I am an Open Source contributor
• I have performed a self-review of my code
• My code follows the style guidelines of this project

Screenshots/GIF📷

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[github-actions]

Hey @bharat-c27, Welcome to the project CalcDiverse! 🎊
Thanks for your contribution! Your effort makes this project better. Keep it up! 🙌
Please wait for the PR to be reviewed. Happy Coding!! ✨

[bharat-c27]

Hello @Rakesh9100 can you please assign to me and add the necessary labels.

Thank you!!

[Nihal4777]

@Rakesh9100 This PR is reviewed & can be merged.

[bharat-c27]

Hello @Rakesh9100 , I have completed the issue can you please assign this PR to me.
There are only 5 days left for GSSOC to get over.

Thank you!!

[Nihal4777]

@bharat-c27 Thank you for your contribution. Don't worry your PR will be merged within deadline.

[bharat-c27]

@bharat-c27 Thank you for your contribution. Don't worry your PR will be merged within deadline.

Okay, Thank you @Nihal4777.

I was having a doubt. I have opened an issue on 12 Jun. I have referenced it 2-3 times, but I think @Rakesh9100 is busy so he did not assigned me the issue. I have completed my implementation work. I worked on it and hope to get merged before the deadline.

So can I raise a PR ?

Issue Link : #1317

[bharat-c27]

Hello @Rakesh9100 please merge the PR as the deadline is tomorrow only.
And what should I do with the my issue #1317 which is been completed ?

[github-actions]

Congrats, Your pull request has been successfully merged 🥳🎉 Thank you for your contribution to my project 🚀 Keep Contributing!! ✨ @bharat-c27