swarm, p2p: Prerequities for ENR replacing handshake (#19275)

* swarm/api, swarm/network, p2p/simulations: Prerequisites for handshake remove

* swarm, p2p: Add full sim node configs for protocoltester

* swarm/network: Make stream package pass tests

* swarm/network: Extract peer and addr types out of protocol file

* p2p, swarm: Make p2p/protocols tests pass + rename types.go

* swarm/network: Deactivate ExecAdapter test until binary ENR prep

* swarm/api: Remove comments

* swarm/network: Uncomment bootnode record load

swarm/network/network.go

@@ -0,0 +1,70 @@
+package network
+
+import (
+	"crypto/ecdsa"
+	"fmt"
+	"net"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+)
+
+// BzzAddr implements the PeerAddr interface
+type BzzAddr struct {
+	OAddr []byte
+	UAddr []byte
+}
+
+// Address implements OverlayPeer interface to be used in Overlay.
+func (a *BzzAddr) Address() []byte {
+	return a.OAddr
+}
+
+// Over returns the overlay address.
+func (a *BzzAddr) Over() []byte {
+	return a.OAddr
+}
+
+// Under returns the underlay address.
+func (a *BzzAddr) Under() []byte {
+	return a.UAddr
+}
+
+// ID returns the node identifier in the underlay.
+func (a *BzzAddr) ID() enode.ID {
+	n, err := enode.ParseV4(string(a.UAddr))
+	if err != nil {
+		return enode.ID{}
+	}
+	return n.ID()
+}
+
+// Update updates the underlay address of a peer record
+func (a *BzzAddr) Update(na *BzzAddr) *BzzAddr {
+	return &BzzAddr{a.OAddr, na.UAddr}
+}
+
+// String pretty prints the address
+func (a *BzzAddr) String() string {
+	return fmt.Sprintf("%x <%s>", a.OAddr, a.UAddr)
+}
+
+// RandomAddr is a utility method generating an address from a public key
+func RandomAddr() *BzzAddr {
+	key, err := crypto.GenerateKey()
+	if err != nil {
+		panic("unable to generate key")
+	}
+	node := enode.NewV4(&key.PublicKey, net.IP{127, 0, 0, 1}, 30303, 30303)
+	return NewAddr(node)
+}
+
+// NewAddr constucts a BzzAddr from a node record.
+func NewAddr(node *enode.Node) *BzzAddr {
+	return &BzzAddr{OAddr: node.ID().Bytes(), UAddr: []byte(node.String())}
+}
+
+func PrivateKeyToBzzKey(prvKey *ecdsa.PrivateKey) []byte {
+	pubkeyBytes := crypto.FromECDSAPub(&prvKey.PublicKey)
+	return crypto.Keccak256Hash(pubkeyBytes).Bytes()
+}