[Feature] PDF to Image

[ayushcmd]

Summary

Export each PDF page as JPG or PNG.

Files to create/edit

• src/pages/tools/PdfToImage.tsx → create
• src/App.tsx → add import + route /tools/pdf-to-image
• src/pages/Tools.tsx → add to allTools[]
• src/components/home/ToolsGrid.tsx → add card

Implementation notes

• Use pdfjs-dist to render pages on canvas
• Let user pick JPG or PNG and DPI (72/150/300)
• Download all pages as ZIP using jszip