feature: Encrypt AWS Share & Store it in DB

[rahulbeeram12]

I have added the functionality of encrypting one of the shares using the AWS KMS encrypting module and then storing it into the respective field of the user's database.

https://github.com/user-attachments/assets/00a78d66-b2b6-4a99-beb8-5a95947838d5

Issue Number: Fixes #168

🛠️ Type of Change

• [ ] 🐛 Bug fix
• [X] ✨ New feature
• [ ] 🚨 Breaking change
• [ ] 📚 Documentation update

✅ Checklist

To ensure a smooth review process, please check off each item as you complete it:

• [X ] Code Style: My code adheres to the project’s style guidelines.
• [X] Self-Review: I have reviewed my own code and made improvements.
• [X] Comments: I’ve added comments to explain complex or non-obvious parts of the code.
• [X] Documentation: I’ve updated the documentation to reflect my changes.
• [X] Warnings: My changes introduce no new warnings.
• [X] Tests: I’ve added tests to verify that my changes work as expected.
• [X] Passes Locally: All new and existing unit tests pass on my local machine.

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We appreciate your contributions! If you have any questions or need further assistance, feel free to reach out.

[rahulbarmann]

@rahulbeeram12 No problem brother 👍

[cb7chaitanya]

@rahulbeeram12 Great work