* feat: add uPnP nat manager
Adds a really basic nat manager that attempts to use UPnP to punch
a hole through your router for any IPV4 tcp addresses you have
configured.
Adds any configured addresses to the node's observed addresses list
and adds observed addresses to `libp2p.multiaddrs` so we exchange
them with peers when performing `identify` and people can dial you.
Adds configuration options under `config.nat`
Hole punching is async to not affect start up time.
Co-authored-by: Vasco Santos <vasco.santos@moxy.studio>
* refactor: add dialing over relay support
* chore: fix lint
* fix: dont clear listeners on close
* fix: if dial errors already have codes, just rethrow them
* fix: clear the registrar when libp2p stops
* fix: improve connection maintenance with circuit
* chore: correct feedback
* test: use chai as promised
* test(fix): reset multiaddrs on dial test
