docs: "APIデザインガイドライン"を追加 #3100

Job	Run time
rust-lint	3m 10s
rust-lint	3m 10s
validate-cargo-lock	24s
validate-cargo-lock	24s
shellcheck	11s
shellcheck	11s
actionlint	20s
actionlint	20s
build-and-test-java-api (windows-latest)	6m 26s
build-and-test-java-api (windows-latest)	6m 26s
build-and-test-python-api (windows-latest)	6m 52s
build-and-test-python-api (windows-latest)	6m 52s
build-and-test-python-api (macos-latest)	3m 5s
build-and-test-python-api (macos-latest)	3m 5s
build-and-test-java-api (macos-latest)	2m 35s
build-and-test-java-api (macos-latest)	2m 35s
build-and-test-python-api (ubuntu-latest)	3m 0s
build-and-test-python-api (ubuntu-latest)	2m 56s
build-and-test-java-api (ubuntu-latest)	2m 39s
build-and-test-java-api (ubuntu-latest)	2m 39s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	1m 35s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	1m 35s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 32s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	1m 32s
build-windows-cpp-example	3m 47s
build-windows-cpp-example	3m 47s
c-header	48s
c-header	48s
rust-integration-test-strategy-matrix	1s
rust-integration-test-strategy-matrix	1s
rust-unit-test	4m 4s
rust-unit-test	4m 4s
rust-integration-test (macos-12)	2m 27s
rust-integration-test (macos-12)	2m 27s
rust-integration-test (ubuntu-20.04)	1m 33s
rust-integration-test (ubuntu-20.04)	1m 33s
	1h 28m 54s

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