feat: ai-content-moderation plugin #799

Job	Run time
build (ubuntu-20.04, linux_openresty, lua-resty-worker-events, t/http3/admin)	3m 46s
build (ubuntu-20.04, linux_openresty, lua-resty-worker-events, t/plugin/[a-k]*)	3m 48s
build (ubuntu-20.04, linux_openresty, lua-resty-worker-events, t/plugin/[l-z]*)	3m 48s
build (ubuntu-20.04, linux_openresty, lua-resty-worker-events, t/admin t/cli t/config-center-yaml...	3m 45s
build (ubuntu-20.04, linux_openresty, lua-resty-worker-events, t/node t/pubsub t/router t/script ...	3m 47s
build (ubuntu-20.04, linux_openresty, lua-resty-events, t/http3/admin)	3m 47s
build (ubuntu-20.04, linux_openresty, lua-resty-events, t/plugin/[a-k]*)	3m 49s
build (ubuntu-20.04, linux_openresty, lua-resty-events, t/plugin/[l-z]*)	3m 46s
build (ubuntu-20.04, linux_openresty, lua-resty-events, t/admin t/cli t/config-center-yaml t/cont...	3m 46s
build (ubuntu-20.04, linux_openresty, lua-resty-events, t/node t/pubsub t/router t/script t/secre...	3m 47s
	37m 49s

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