add test for one-shot encoding/decoding with offset #567

Job	Run time
Build and test cmake:gcc9	29s
Build and test cmake:clang15	29s
Build and test cmake:clang15:asan	40s
Build and test cmake:clang15:tsan	44s
Build and test cmake:clang15:ubsan	50s
Build and test cmake:qemu-arm-neon-gcc	53s
Build and test cmake-osx:clang	50s
Build and test cmake-osx:gcc	1m 3s
Build and test cmake-win64:msvc2019-rel	57s
Build and test cmake-win64:msvc2019-dbg	1m 26s
Build and test fuzz:clang15	29s
Build and test python3.10:clang15	1m 51s
Build and test python3.10-win	57s
Build and test maven	38s
Build and test bazel:root	29s
Build and test bazel:go	23s
Build and test bazel:java	1m 54s
Build and test bazel:research	28s
Build and test bazel-osx:root	1m 8s
Build and test bazel-osx:go	1m 10s
Build and test bazel-osx:java	5m 0s
Build and test bazel-osx:research	1m 37s
Build and test bazel-win:root	53s
Build and test bazel-win:java	2m 56s
Build and test bazel-win:research	1m 37s
	29m 51s

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