Add: File Upload widget 🚀

Hey Contributors!✨

Currently, Streamlit is like a magician without a hat - it's incredible, but it's missing that extra bit of wow factor. Our users have been clamoring for a feature that lets them upload files directly to **PDFMaker**. We want to make our app more dynamic!

I propose we add a File Upload widget to Streamlit that will give our users the power to seamlessly upload files from their local machine.

- **Widget Integration**: We'll need to create a user-friendly widget that allows users to select and upload files.
- **Support Multiple File Types**: Let's make sure our File Upload widget can handle a variety of image file types - JPG, PNG, etc.
- **Customization**: Users should be able to customize the appearance and behavior of the widget to fit seamlessly into their app's design.