feat: add ai-prompt-guard plugin #1210

Job	Run time
build (ubuntu-latest, linux_openresty, lua-resty-worker-events, t/http3/admin)	13m 27s
build (ubuntu-latest, linux_openresty, lua-resty-worker-events, t/plugin/[a-k]*)	34m 10s
build (ubuntu-latest, linux_openresty, lua-resty-worker-events, t/plugin/[l-z]*)	34m 7s
build (ubuntu-latest, linux_openresty, lua-resty-worker-events, t/admin t/cli t/config-center-yam...	24m 41s
build (ubuntu-latest, linux_openresty, lua-resty-worker-events, t/node t/pubsub t/router t/script...	26m 24s
build (ubuntu-latest, linux_openresty, lua-resty-events, t/http3/admin)	13m 41s
build (ubuntu-latest, linux_openresty, lua-resty-events, t/plugin/[a-k]*)	34m 33s
build (ubuntu-latest, linux_openresty, lua-resty-events, t/plugin/[l-z]*)	33m 56s
build (ubuntu-latest, linux_openresty, lua-resty-events, t/admin t/cli t/config-center-yaml t/con...	24m 10s
build (ubuntu-latest, linux_openresty, lua-resty-events, t/node t/pubsub t/router t/script t/secr...	25m 24s
	4h 24m 33s

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