docs: add Feast openGauss integration guide-docs-AtomGit

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已开启

docs: add Feast openGauss integration guide #8877

yanfei01-2026创建于 9月20日从yanfei01-2026/docs： docs/feast-opengauss-online-store 合入到 opengauss/docs： master

docs: add Feast openGauss integration guide #8877

已开启

yanfei01-2026创建于 9月20日

从yanfei01-2026/docs docs/feast-opengauss-online-store合入到opengauss/docs master