test: Implement Unit Tests for Web3.Storage Integration and QR Code Generation

[akhileshthite]

As the codebase grows, it's important to ensure that the core functionalities related to Web3.Storage uploads and QR code generation remain robust and error-free. This issue aims to introduce unit tests that ensure the integrity of these functionalities.

TODOs:

• Write unit tests to ensure that the web3.storage is correctly uploading files and folders to IPFS.
• Write tests to ensure that upon successful upload, a QR code is generated correctly.
• The tests can be written using a popular testing framework like mocha.
• Upon running npm run test, the results of these tests should be visible.

Key Files and their Responsibilities:

1. ./src/scripts/web3Storage.js:
   • Handles the uploading of files and folders to Web3.Storage.
   • Generates decentralized QR codes for uploaded content.
2. ./src/scripts/qrHandler.js:
   • Responsible for creating QR codes.
3. ./src/scripts/utils.js:
   • Contains utility functions such as loaders, progress updaters, and QR code color handlers.

For development setup and contribution guide, check the main README.md.