Add a way to switch between bookmarks (like in track)

[hrw]

When I select track in Tracks view then choosing talk displays it. And left/right swipe moves to prev/next talk in that track.

Would be nice to have it available in Bookmarks view - to have easy way to switch to prev/next bookmarked talk.

And similar to Live Next/Now list.

[cbeyls]

While possible, that would be complicated to implement technically and not always user-friendly because:

• Removing a bookmark while in the "bookmarks swipe screen" would move the UI in an inconsistent state, which means the screen would have to be closed immediately or should immediately switch to the next bookmark which could feel counter-intuitive. And then there would be no way to easily re-add the bookmark in case it was removed by mistake.
• Since the app also allows to reach other sessions by clicking on a speaker's name, you could add more bookmarks there, then when navigating back to the bookmarks swipe screen, all bookmarks would have to be updated and the user could lose track of its current position.
• The top app bar in the session details screen always shows the track title and color. Which means that title and color would have to change when swiping.