[WIP] Break down JxlDecoder to better support streaming, preview, animation, etc.
#428
| Job | Run time |
|---|---|
| 2m 12s | |
| 3m 53s | |
| 2m 3s | |
| 2m 31s | |
| 3m 9s | |
| 5m 57s | |
| 5m 43s | |
| 4s | |
| 2m 42s | |
| 28m 14s |