fix: install missing html-to-image dependency

[Niteshagarwal01]

PR: Fix Missing html-to-image Dependency

Closes #605

Title

fix: install missing html-to-image dependency for DevCard exports

Description

Issue:
The newly introduced DevCard component uses the toPng function from html-to-image to generate a downloadable image of the developer's profile card. However, this library was inadvertently left out of the project's dependencies in package.json. This omission triggers a strict TypeScript compilation error (error TS2307: Cannot find module 'html-to-image') and fundamentally breaks the Next.js production build (npm run build).

Fix:

• Installed the html-to-image package.
• This successfully restores the ability to compile the application and resolves the Module not found error during the static build generation phase.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Testing

• Ran npm run build locally and verified that the production build succeeds.
• Checked out DevCard locally and confirmed that clicking the export button securely downloads a PNG of the card.