chore: unify naming for node related types

internal/types/node.go

@@ -1,16 +1,27 @@
 package types
 
+import "fmt"
+
 // TODO: consider moving this type back to registry
 type Node struct {
-	Address string `json:"address"`
-	Name string `json:"name"`
-	Roles []Role `json:"roles"`
+	Hostname string `json:"hostname"`
+	Address  string `json:"address"`
+	Port     int    `json:"port"`
+	Roles    []Role `json:"roles"`
+	Endpoint string `json:"endpoint"`
 }
 
-func NewNode(address string, name string, roles []Role) Node {
+func NewNode(
+	hostname string,
+	address string,
+	port int,
+	roles []Role,
+) Node {
 	return Node{
-		Address: address,
-		Name: name,
-		Roles: roles,
+		Hostname: hostname,
+		Address:  address,
+		Port:     port,
+		Roles:    roles,
+		Endpoint: fmt.Sprintf("%s:%d", address, port),
 	}
 }