Dandelion++ for Waku v2

[kaiserd]

This milestone issue tracks Dandilion++ for Waku v2.

Issues

• [ ] check waku Dandelion++ feasibility
  • Does Dandelion++ offer the properties we want from a lightweight pluggable anonymity protocol?
  • Does the efficiency / latency cost seem acceptably low?
• [x] Waku-Dandelion raw RFC https://github.com/vacp2p/rfc/issues/538
• [ ] https://github.com/vacp2p/rfc/pull/549
• [ ] implementation of Waku-Dandelion
  • This PR can be seen as a first illustration (not a PoC yet): https://github.com/waku-org/nwaku/pull/1267
• [ ] research log post on Waku-Dandelion

[kaiserd]

This issue is currently is moved into backlog because, afaict, #149 offers better anonymity gains, and is essential in improving Waku anonymity. Nevertheless, completing this issue is valuable and will be addressed in the future.