feat: introduce cluster agent

pkg/config/config.go

@@ -7,7 +7,8 @@ import (
 )
 
 type Config struct {
-	Rcond RcondConfig `yaml:"rcond"`
+	Rcond   RcondConfig   `yaml:"rcond"`
+	Cluster ClusterConfig `yaml:"cluster"`
 }
 
 type RcondConfig struct {
@@ -15,6 +16,17 @@ type RcondConfig struct {
 	ApiToken string `yaml:"api_token"`
 }
 
+type ClusterConfig struct {
+	Enabled       bool     `yaml:"enabled"`
+	NodeName      string   `yaml:"node_name"`
+	SecretKey     string   `yaml:"secret_key"`
+	Join          []string `yaml:"join"`
+	AdvertiseAddr string   `yaml:"advertise_addr"`
+	AdvertisePort int      `yaml:"advertise_port"`
+	BindAddr      string   `yaml:"bind_addr"`
+	BindPort      int      `yaml:"bind_port"`
+}
+
 func LoadConfig(path string) (*Config, error) {
 	yamlFile, err := os.ReadFile(path)
 	if err != nil {