I've developed a plugin that does exactly that. I created it for myself and have given it out for free. You can download it here: https://www.kvraudio.com/product/lsgate-by-littlestudios. Just click the download link to the right. It can do some cool things, stutters, tremolo or create rhythmic patterns. It syncs to the host and uses musical note values. Let me know what you think or if you have any questions or if you have trouble getting it to work properly. There's a user manual included in the .zip file that explains all the functions.