add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

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# Locally calculated
sha256    db7af849c555d1a474f729fe4a56b5530e9be7b24749eb7a7c474a7c7207b972  lua-cjson-2.1.0-1.src.rock