Feature: Add horizontal layout option

[m0nzderr]

Currently pages are arranged vertically one after another in a single column. It would be nice to be able to arrange pages differently, i.e horizontally in a single row, or multiple rows. That would suit the use case of filling the full display width with the content.

PDF.js seems to already support this kind of layout, so it should be a question of passing the right options to it:

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.