feat: add 5 Chinese government data sources (AM batch, 2026-04-19)#159

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feat/add-china-sources-20260419-am

Apr 23, 2026

Commits on Apr 19, 2026

feat: add 5 Chinese government data sources (AM batch, 2026-04-19)
firstdata-dev
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Commits on Apr 23, 2026

fix: remove china-cma-data (duplicate of china-cma data_url data.cma.cn)
firstdata-dev
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