There are two ways to layer a VPN and tor:
- Tor over VPN; or
- VPN over Tor.
In the first option, you gain little. Tor already encrypts your traffic, so your ISP can't see inside them. Technically, Tor over a VPN hides the fact that you're using Tor from your ISP, but Tor's snowflake does something similar if you need that.
In the second option, you're revealing your VPN account information, which could theoretically be associated back to you. Tor adds nothing over just a VPN in this case.
But you couldn't release your own projects based on this under pure MIT or Apache-2.0. Presumably you'd need to include the same restriction about selling on Atlassian's marketplace.