Order showtimes sequentially or chunk them sensibly

[reefdog]

The API chunks showtimes based on 2D/3D and perhaps also by auditorium. Do one of these two things:

1. Sort them into a single sequential stream of showtimes with tags (3D, IMAX, etc.) as necessary.
2. Keep them chunked, but in a very streamlined way indicate what each chunk is. (I can imagine it being very useful to have a chunk for 2D, for 3D, for HFR, for IMAX, for IMAX 15/70mm, for 5/70mm, etc.)