Implement Export to PDF/PNG Feature

[sanskriti-lal]

Related Issue

None

Description

This update adds "Export as PDF" and "Export as PNG" functionalities to the db-drawer CLI tool, enabling users to export visualized database schemas as PDF or PNG files. By integrating an Express server and utilizing Puppeteer, the tool now provides routes to generate and download these files, enhancing documentation and presentation capabilities. This feature ensures users can easily create and share static representations of their database structures directly from the tool's web interface.

Type of PR

• Bug fix
• [ X] Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / videos (if applicable)

[Attach any relevant screenshots or videos demonstrating the changes]

Checklist:

• [ X] I have performed a self-review of my code
• [ X] I have read and followed the Contribution Guidelines.
• [ X] I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• [ X] I have commented my code, particularly in hard-to-understand areas.

Additional context:

[Include any additional information or context that might be helpful for reviewers.]
NONE

[github-actions]

Great job, @sanskriti-lal! 🎉 Thank you for submitting your pull request. Your contribution is valuable and we appreciate your efforts to improve our project.

We will promptly review your changes and offer feedback. Keep up the excellent work! Kindly remember to check our contributing guidelines