[#26180] PDF export for time sheets

[as-op]

Ticket

https://community.openproject.org/work_packages/26180

What are you trying to accomplish?

Export logged time as PDF time sheets

Screenshots

What approach did you choose and why?

Merge checklist

• Export skeleton PDF via the background worker and a button in the cost report view
• Don't navigate to .../job_statuses/xyz, use the "inline" progress dialog
• Apply styling
• Ellipse text in prawn table cell?
• Bad table splitting on page breaks with merged rows
• Use cost report query filter & data (hours missing for now)
• Added/updated tests
• Added/updated documentation in Lookbook (patterns, previews, etc)
• Tested major browsers (Chrome, Firefox, Edge, ...)