Split qrcode.js into 3 files: qrHandler.js, utils.js, and web3Storage.js

[AdityaNik]

Related Issue (if any)

Closes: #40

Describe the add-ons or changes you've made

In this Pull Request, I've split the existing qrcode.js file into three separate files: qrHandler.js, utils.js, and web3Storage.js.

Type of change

• [x] Refractor (Splitting up the files)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Code style update (formatting, local variables)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Checklist:

• [x] My code follows the "contribution guidelines" of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly wherever it was hard to understand.
• [x] My changes generate no new warnings.
• [ ] Any dependent changes have been merged and published in downstream modules.

[AdityaNik]

@akhileshthite please review

[akhileshthite]

@akhileshthite please review

Thanks! Looks good to me.

Will merge tomorrow.

[akhileshthite]

@AdityaNik, merged. Great work! There's another active issue if you're interested #41

[AdityaNik]

@akhileshthite looking forward to solve that as well

[akhileshthite]

@akhileshthite looking forward to solve that as well

Cool, let me know when you start the work so I can assign the issue to you.