Add support to specify credentials for S3 explicitly #4173

Job	Run time
clippy ubuntu-latest	1m 5s
toml_format	7s
clippy macOS-latest	59s
test ubuntu-20.04 rust 1.75.0 cuda11.1	5m 32s
clippy windows-latest	2m 45s
test ubuntu-22.04 rust 1.75.0 dist-server	3m 31s
rustfmt ubuntu-latest	9s
test ubuntu-20.04 rust stable	2m 1s
test ubuntu-20.04 rust beta	1m 44s
test ubuntu-20.04 rust nightly	1m 35s
build sccache x86_64-unknown-linux-musl	3m 52s
test ubuntu-20.04 rust stable no-default-features	2m 2s
build sccache-dist x86_64-unknown-linux-musl	4m 21s
test ubuntu-22.04 rust stable cuda11.8	4m 28s
check_features (azure)	54s
coverage ubuntu-22.04 rust nightly	5m 25s
test ubuntu-24.04 rust 1.75.0 cuda12.6	3m 53s
build sccache aarch64-unknown-linux-musl	4m 4s
check_features (gcs)	43s
coverage macos-13 rust nightly	6m 12s
test macos-13 rust stable	3m 51s
check_features (gha)	50s
build sccache armv7-unknown-linux-musleabi	3m 47s
check_features (memcached)	45s
build sccache i686-unknown-linux-musl	3m 49s
test macos-14 rust stable	1m 22s
test freebsd-14.1 rust stable (ubuntu-22.04)	4m 57s
build sccache x86_64-apple-darwin	3m 53s
check_features (redis)	48s
test windows-2019 rust 1.75.0 cuda11.1	6m 20s
build sccache aarch64-apple-darwin	2m 59s
check_features (s3)	43s
test windows-2019 rust nightly cuda11.8	6m 3s
build sccache x86_64-pc-windows-msvc	10m 44s
check_features (webdav)	50s
test windows-2019 rust beta cuda11.8	5m 22s
build sccache aarch64-pc-windows-msvc	9m 53s
test windows-2022 rust 1.75.0 cuda12.6	5m 10s
test windows-2022 rust nightly cuda12.6	5m 18s
test windows-2022 rust beta cuda12.6	5m 11s
release	0s
	2h 17m 57s

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