Give option to use Doppio for PDF generation

Going to postpone this until we get things pluggable first 📌 Refactor to allow multiple puppeteer services Fixed

Okay this is ready now

Following https://www.drupal.org/project/page_to_pdf/issues/3459121 📌 Refactor to allow multiple puppeteer services Fixed (thanks!), the MR of this issue now contains updates following the new plugin structure. New generators for each service (doppio or browserless) are implemented. This also includes some other general fixes.

Updated README for setup instructions.

Note that for both services, their API key can be added on settings.local with: $settings['page_to_pdf_api_key'] = API_KEY

Finally, not very important, I also wonder if we should refactor the project and substitute 'Puppeteer" with "PDF_service" on labels and variable names to reflect the latest changes that are tool-agnostic; it's basically now flexible to use external services that generate PDFs.

Thanks Andrea! Almost there!

Great this looks good thanks! Can you confirm that PDFs still generate with browserless.io with this MR please? If so, I'll merge

thanks Scott! yes, I've tested with both services :)

Excellent thank you! Will make a new release shortly

Automatically closed - issue fixed for 2 weeks with no activity.