Add multiline logging interceptor sample for Datadog compatibility #955

Job	Run time
build-lint-test (3.10, macos-arm)	21s
build-lint-test (3.10, windows-latest)	21s
build-lint-test (3.10, ubuntu-latest)	15s
build-lint-test (3.10, macos-intel)	20s
build-lint-test (3.13, ubuntu-latest)	29s
build-lint-test (3.13, macos-intel)	26s
build-lint-test (3.13, windows-latest)	21s
build-lint-test (3.13, macos-arm)	33s
	3m 6s

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