Expose Download Metadata for Every Chunk #119

Job	Run time
minrust	1m 10s
clippy	2m 8s
fmt	15s
docs	1m 10s
basic checks	1s
check-external-types (ubuntu-24.04)	1m 40s
features	1m 14s
check deps with cargo-deny	22s
saniters	4m 17s
Test S3 transfer manager HLL (ubuntu-24.04)	2m 34s
Test S3 transfer manager HLL (windows-2022)	2m 25s
Test S3 transfer manager HLL (macos-14)	2m 15s
Required checks pass	0s
	19m 31s

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