Enhancements to Private Spaces VPN Feature

### Required Terms

- [X] I agree to follow this project's [Code of Conduct](https://github.com/heroku/roadmap/blob/main/CODE_OF_CONDUCT.md)
- [X] I have read and accept the [Salesforce Program Agreement](https://www.salesforce.com/company/program-agreement/)

### What service(s) is this request for?

Runtime, Private Spaces

### Tell us about what you're trying to solve. What challenges are you facing?

This issue is to track and discuss possible enhancements to the [Private Spaces VPN feature](https://devcenter.heroku.com/articles/private-space-vpn-connection). Please pile in in the comments with ideas. Enhancement requests we're tracking:

* Add BGP routing in addition to the current static route option