[Enhancement]: Add duration to web page chapter list

[ZLoth]

Type of Enhancement

None

Describe the Feature/Enhancement

It would be nice to know the duration of a book chapter in addition to start and end times.

Why would this be helpful?

It's helpful to know how long a chapter is without some mental arithmetic.

Future Implementation (Screenshot)

Audiobookshelf Server Version

2.10.1

Current Implementation (Screenshot)