Feature flagging system & appliance to lifetime package

We need to create a feature flagging system that allows setting a feature list per package and also allow individual allocation of feature per user. Right now, we need to apply this to lifetime package. Here is the summary for features limitations on lifetime: - 1000 answers (completed answers) - No flow split (unless upgraded) - No Notification (sms) - Visual analytics (no) - Meta (no) and all integrations - All events (no) - Maybe limit uploads limit Lifetime package will include email notifications. Feature flagging should take into account an UI that allows for path to upgrade: this means the feature CTA should exist in the canvas, but with a symbol of requiring an upgrade. Then clicking it taking the user to the upgrade path