feat: onboarding plugin

apps/docs/content/docs/offer.mdx

@@ -7,12 +7,14 @@ To stay up-to-date with the current progress of Better-Auth-Kit, you can track o
 
 ## Plugins
 
-- [Waitlist](/docs/plugins/waitlist) - A plugin to create a waitlist for your users. (Coming Soon)
 - [Reverify](/docs/plugins/reverify) - A plugin to reverify a user's identity.
-- [Legal Consent](/docs/plugins/legal-consent) - A plugin to collect legal consent from your users. (Coming Soon)
+- [Feedback](/docs/plugins/feedback) - A plugin to collect feedback from your users.
+- [Legal Consent](/docs/plugins/legal-consent) - A plugin to collect legal consent from your users.
+- [App Invite](/docs/plugins/app-invite) - A plugin to invite users to your application.
+- [Onboarding](/docs/plugins/onboarding) - A plugin to add onboarding to your authentication flow.
+- [Waitlist](/docs/plugins/waitlist) - A plugin to create a waitlist for your users. (Coming Soon)
 - [Blockade](/docs/plugins/blockade) - A plugin to blacklist or whitelist users from accessing your application. (Coming Soon)
 - [Shutdown](/docs/plugins/shutdown) - A plugin to stop signins or signups at any moment, such as for maintenance. (Coming Soon)
-- [Feedback](/docs/plugins/feedback) - A plugin to collect feedback from your users.
 
 ## Libraries