Feat: rework receipt PDF generation so it outputs text and not an image

## Problem
Our current combo of `html2canvas-pro` and `jsPDF` work in the following way

`JSX -> Canvas -> PNG -> PDF`

which means we can't highlight text in the PDF document since the content is just a PNG image.

## Expected behaviour

The PDF should be text and highlightable, so we need to use either just `jsPDF` with its proprietary syntax or a different library altogether.