all: library changes for swarm-network-rewrite (#16898)

This commit adds all changes needed for the merge of swarm-network-rewrite.
The changes:

- build: increase linter timeout
- contracts/ens: export ensNode
- log: add Output method and enable fractional seconds in format
- metrics: relax test timeout
- p2p: reduced some log levels, updates to simulation packages
- rpc: increased maxClientSubscriptionBuffer to 20000

p2p/simulations/http.go

@@ -561,7 +561,8 @@ func (s *Server) LoadSnapshot(w http.ResponseWriter, req *http.Request) {
 
 // CreateNode creates a node in the network using the given configuration
 func (s *Server) CreateNode(w http.ResponseWriter, req *http.Request) {
-	config := adapters.RandomNodeConfig()
+	config := &adapters.NodeConfig{}
+
 	err := json.NewDecoder(req.Body).Decode(config)
 	if err != nil && err != io.EOF {
 		http.Error(w, err.Error(), http.StatusBadRequest)