add FAQ schema as general in hugo theme

Merged Christopher Guindon requested to merge github/fork/flora8984461/yiliu/master/faqSchema into master

Created by: flora8984461

Inspired by https://github.com/jakartaee/jakarta.ee/issues/941

I'm thinking, for different languages we should probably create different json file 🤔

Signed-off-by: Yi Liu yi.liu@eclipse-foundation.org

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