* fix node info to use announcedAddresses again
* expose ports via Debug API ("MyBoundPorts")
* builders default to port 0 in discv5/metrics/p2pTcp
* add waku/net/bound_ports.nim
* move auto_port and net_config to waku/net/
* extract port-0 retry loop to tryWithAutoPort[T]
* misc refactors and fixes
* tcp/rest/websocket/metrics/discv5 default port changed to 0
* all CLI port types are now uint16 (instead of Port)
* any port set to 0 on conf results in a random port bound
* write back bound values to both WakuConf and WakuNode.ports
* REST GET /info reports actually bound ports for enabled services
* conf builders now err if any port config is unset
* setupDiscoveryV5 returns Result and errors out on port 0
* rename setupAndStartDiscv5WithAutoPort to setupAndStartDiscv5
* updateWaku ENR rebuild now runs after discv5 startup
* remove Port(0) conf from tests (0 is default)
* add port = 0 to conf builder tests (conf builder has no default)
* Rename waku_api to rest_api and underlying rest to endpoint for clearity
* Rename node/api to node/kernel_api to suggest that it is an internal accessor to node interface + make everything compile after renaming
* make waku api a top level import
* fix use of relative path imports and use default to root rather in case of waku and tools modules
