Swift

Add symmetric relationship and offset tests #39

Job	Run time
Android (release)	3m 15s
Skip Fuse (Android)	1m 44s
windows	8m 43s
Android (debug)	2m 24s
Linux (swiftlang/swift:nightly-noble)	20m 17s
macOS (release)	10m 21s
macOS (debug)	2m 43s
iOS (debug)	6m 20s
Linux (swiftlang/swift:nightly-noble)	3m 58s
Linux (swift:latest)	2m 56s
Code Coverage	2m 6s
iOS (release)	21m 16s
Linux (swift:latest)	14m 12s
Android Test	4m 28s
	1h 44m 43s

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