[WIP] Break down JxlDecoder to better support streaming, preview, animation, etc.
#434
| Job | Run time |
|---|---|
| 9s | |
| 2m 54s | |
| 2m 24s | |
| 4m 12s | |
| 3m 16s | |
| 2m 27s | |
| 2m 8s | |
| 6m 33s | |
| 5m 30s | |
| 29m 33s |