[AI-72] LangGraph plugin samples #1118

Job	Run time
build-lint-test (3.14, ubuntu-latest)	9m 16s
build-lint-test (3.14, macos-arm)	8m 20s
build-lint-test (3.10, windows-latest)	6m 25s
build-lint-test (3.10, macos-arm)	6m 54s
build-lint-test (3.14, windows-latest)	10m 19s
build-lint-test (3.14, macos-intel)	13m 51s
build-lint-test (3.10, ubuntu-latest)	5m 33s
build-lint-test (3.10, macos-intel)	8m 41s
	1h 9m 19s

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