feat(services/s3): add append support #2163

Job	Run time
build_all_features	4m 30s
build_all_platforms (ubuntu-latest)	2m 19s
build_all_platforms (macos-latest)	2m 7s
build_default_features (ubuntu-latest)	34s
build_all_platforms (windows-latest)	2m 15s
build_default_features (macos-latest)	38s
build_default_features (windows-latest)	2m 10s
build_under_wasm	43s
check_docs	3m 15s
check_msrv	32s
check_clippy	3m 40s
unit	4m 47s
	27m 30s

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