Hi Amko Hartma,
My name is Cristian, And I am helping in the forum with the intention of becoming an MVP, your like helps me a lot and even better if I manage to solve your issue.
Inside outsystems you will not be able to raise the VueJS project. What you could do is a redirect and the same with VUE.
If you can auto-authenticate with other systems, you can do this by means of a token or other convenient methods.
https://www.outsystems.com/forums/discussion/67450/when-we-login-with-external-auth-system-is-the-password-saved-in-the-outsystems-d/
Maybe later they will give the option to add the compiled angular, vuejs and react. to be able to raise it from outysstems. but so far there is not, you can work with ReactJs from the platform and you could also add your Javacript libraries, (JqueryJS, angularJS, reactjs.....)
I hope this information helps you.
Best regards,
CP