feat(services/s3): add append support #2164

Job	Run time
build_all_features	4m 46s
build_all_platforms (ubuntu-latest)	2m 26s
build_all_platforms (macos-latest)	3m 54s
build_default_features (ubuntu-latest)	35s
build_all_platforms (windows-latest)	4m 43s
build_default_features (macos-latest)	53s
build_default_features (windows-latest)	2m 35s
build_under_wasm	50s
check_clippy	3m 42s
check_docs	4m 12s
check_msrv	32s
unit	6m 38s
	35m 46s

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