Expose EExpArgGroup and related types, version bump (#881) #3494

Job	Run time
Setup Build Matrix (true, ion-rust, windows, macos, ubuntu, al2-x86, al2-arm, windows, macos, ubu...	1s
Build and Test (windows, default)	5m 39s
Build and Test (windows, all)	6m 55s
Build and Test (windows, experimental-ion-hash)	5m 18s
Build and Test (windows, experimental)	6m 0s
Build and Test (macos, default)	1m 42s
Build and Test (macos, all)	2m 24s
Build and Test (macos, experimental-ion-hash)	2m 15s
Build and Test (macos, experimental)	2m 15s
Build and Test (ubuntu, default)	2m 11s
Build and Test (ubuntu, all)	4m 37s
Build and Test (ubuntu, experimental-ion-hash)	2m 30s
Build and Test (ubuntu, experimental)	2m 56s
Build and Test (al2-x86, default)	1m 35s
Build and Test (al2-x86, all)	2m 19s
Build and Test (al2-x86, experimental-ion-hash)	1m 51s
Build and Test (al2-x86, experimental)	2m 13s
Build and Test (al2-arm, default)	1m 39s
Build and Test (al2-arm, all)	2m 1s
Build and Test (al2-arm, experimental-ion-hash)	1m 54s
Build and Test (al2-arm, experimental)	2m 2s
Build and Test Confirmation	1s
	1h 0m 18s

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