C APIのテストにvoicevox_core.hを使う #2654

Job	Run time
actionlint	24s
shellcheck	22s
build-and-test-python-api (windows-latest)	6m 10s
build-and-test-python-api (macos-latest)	7m 11s
build-and-test-python-api (ubuntu-latest)	3m 5s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	4m 5s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 54s
build-windows-cpp-example	5m 3s
c-header	50s
rust-integration-test-strategy-matrix	1s
rust-lint	5m 21s
rust-unit-test	9m 3s
validate-cargo-lock	28s
build-and-test-java-api (windows-latest)	5m 19s
build-and-test-java-api (macos-latest)	6m 44s
build-and-test-java-api (ubuntu-latest)	3m 6s
rust-integration-test (windows-2019, directml)	7m 59s
rust-integration-test (macos-11)	5m 49s
rust-integration-test (ubuntu-20.04)	2m 55s
	1h 15m 49s

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