feat(services/swift): Added user metadata support for swift service #2455

Job	Run time
build_all_features	4m 56s
build_all_platforms (ubuntu-latest)	2m 27s
build_all_platforms (macos-latest)	2m 12s
build_all_platforms (windows-latest)	6m 0s
build_default_features (ubuntu-latest)	44s
check_docs	3m 27s
build_under_wasm	1m 1s
build_default_features (macos-latest)	1m 2s
check_clippy	3m 36s
build_default_features (windows-latest)	2m 19s
check_msrv	35s
unit	6m 59s
	35m 18s

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