* misc/mdns: Make MdnsService::new sync by using std::net::UdpSocket::bind
MdnsService uses an IP address to create a UDP socket. The address does
not need to be resolved. Therefore one can use std's UdpSocket::bind
instead of the async counterpart from async-std. As a result
MdnsService::new and MdnsService::silent don't need to be async.
* examples/mdns-passive-discovery: Don't await sync MdnsService::new
* misc/mdns/src/behaviour: Make Mdns::new sync
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
* Move the MdnsService to a service module
* Add a Mdns behaviour
* Add a Mdns network behaviour
* Add minor documentation
* Add minor todo
* Use nat_traversal on the observed address
* Don't add self to topology
* Automatically connect to nodes we discover
* Add Debug implementations
* Fix example
