feat: useEmbed

[bendersej]

Background

This PR introduces the hook useEmbed that allows to programmatically control the editor:

import { EmbedPDF, useEmbed } from "@simplepdf/react-embed-pdf";

const { embedRef, actions } = useEmbed();

return (
   <>
      <button onClick={() => await actions.submit({ downloadCopyOnDevice: false })}>Submit</button>
      <button onClick={() => await actions.selectTool('TEXT')}>Select Text Tool</button>
      <EmbedPDF
         companyIdentifier="yourcompany"
         ref={embedRef}
         mode="inline"
         style={{ width: 900, height: 800 }}
         documentURL="https://cdn.simplepdf.com/simple-pdf/assets/sample.pdf"
      />
   </>
);

Coupled with the upcoming headless SimplePDF feature, this allows to fully customise the look and feel of SimplePDF by removing the sidebar entirely and controlling the editor programmatically.

Currently the two following actions have been implemented:

• Select tool
• Submit

Upcoming actions:

• Fill fields

Changes

• Introduce useEmbed
• Add documentation
• Publish @simplepdf/react-embed-pdf@1.9.0