feat(services/swift): Added user metadata support for swift service #2451

Job	Run time
build_all_features	4m 56s
build_all_platforms (ubuntu-latest)	2m 29s
build_default_features (ubuntu-latest)	42s
build_all_platforms (macos-latest)	3m 21s
build_default_features (macos-latest)	1m 4s
build_under_wasm	1m 8s
build_all_platforms (windows-latest)	5m 59s
check_clippy	3m 56s
build_default_features (windows-latest)	2m 19s
check_docs	3m 30s
check_msrv	35s
unit	6m 58s
	36m 57s

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