Feature request - Add support for Tor and pluggable transports (obfs4, snowflake, webtunnel)

Hi! 

I was wondering if you'd be open to adding support for Tor-related tests in this project. 
These tests could be really useful for evaluating DPI behavior against Tor.

These tests that would be interesting for us:

- Tor direct connection (without bridges)
- Snowflake
- Tor obfs4
- WebTunnel

Thank you for working on this project!