Introduces AnnotationSeq/AnnotationsVec #2742

Job	Run time
Build and Test (ubuntu-latest, default, false)	1m 27s
Build and Test (ubuntu-latest, all, false)	1m 30s
Build and Test (ubuntu-latest, experimental-ion-hash, false)	1m 32s
Build and Test (ubuntu-latest, experimental, false)	1m 28s
Build and Test (windows-latest, default, false)	1m 31s
Build and Test (windows-latest, all, false)	1m 31s
Build and Test (windows-latest, experimental-ion-hash, false)	1m 31s
Build and Test (windows-latest, experimental, false)	1m 31s
Build and Test (macos-latest, default, false)	1m 31s
Build and Test (macos-latest, all, false)	1m 27s
Build and Test (macos-latest, experimental-ion-hash, false)	1m 32s
Build and Test (macos-latest, experimental, false)	1m 30s
Build and Test (codebuild-ion-rust-arm-3.0-large, default, false)	1s
Build and Test (codebuild-ion-rust-arm-3.0-large, all, false)	1s
Build and Test (codebuild-ion-rust-arm-3.0-large, experimental-ion-hash, false)	1s
Build and Test (codebuild-ion-rust-arm-3.0-large, experimental, false)	1s
Build and Test (codebuild-ion-rust-al2-5.0-large, default, false)	1s
Build and Test (codebuild-ion-rust-al2-5.0-large, all, false)	1s
Build and Test (codebuild-ion-rust-al2-5.0-large, experimental-ion-hash, false)	1s
Build and Test (codebuild-ion-rust-al2-5.0-large, experimental, false)	1s
	18m 9s

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