* Move waku.nim from waku/factory to under waku/
* remove unused
* Realize Kernel API in scope of Waku class
* Refactor waku/api into messaging_client, waku/api/types and api_conf into logos_delivery/api
* Make liblogosdelivery and wakunode2 compile, remove waku/api.nim as it was just a import orchestrator
* make test compile and run
* Reconcile master's new send tests to LogosDelivery API after rebase
master commits #3965/#3669-followup added two test cases (Edge lightpush
delivery #3847, store-validation timeout) written against the removed
waku/api.nim createNode helper. Rewrite them to the LogosDelivery shape:
createNode -> LogosDelivery.new, node.node -> node.waku.node,
node.brokerCtx -> node.waku.brokerCtx, node.send -> node.messagingClient.send,
and drop the now-implicit mountMessagingClient calls (LogosDelivery.new
mounts the client internally).
* additive quic transport, off by default (--quic-support)
* add QuicConf + QuicConfBuilder, --quic-support / --quic-port flags
* net_config announces quic-v1 host/ext/dns4 addrs, adds quic-v1 to enr multiaddrs
* newWakuSwitch mounts quic transport when a quic addr is set
* toRemotePeerInfo: quic from enr multiaddrs ext, sorted quic-first
* BoundPorts.quic, read back the bound quic port at start (handles --quic-port=0)
* skip auto quic addr when operator supplies one via --ext-multiaddr
* tests: nodes dual-stack by default, tcp-only where single transport asserted
* tests: drop hardcoded ephemeral ports (port 0) to fix quic-churn bind flakes
* use setupNat to discover NAT-mapped UDP port when QUIC enabled
