feat: implements circuitbreaker layer

internal/config/layers.go

@@ -3,7 +3,8 @@ package config
 import "time"
 
 type LayersConfig struct {
-	Queue QueueLayerConfig `yaml:"queue"`
+	Queue          QueueLayerConfig          `yaml:"queue"`
+	CircuitBreaker CircuitBreakerLayerConfig `yaml:"circuitbreaker"`
 }
 
 func NewDefaultLayersConfig() LayersConfig {
@@ -12,6 +13,9 @@ func NewDefaultLayersConfig() LayersConfig {
 			TemplateDir:      "./layers/queue/templates",
 			DefaultKeepAlive: NewInterpolatedDuration(time.Minute),
 		},
+		CircuitBreaker: CircuitBreakerLayerConfig{
+			TemplateDir: "./layers/circuitbreaker/templates",
+		},
 	}
 }
 
@@ -19,3 +23,7 @@ type QueueLayerConfig struct {
 	TemplateDir      InterpolatedString    `yaml:"templateDir"`
 	DefaultKeepAlive *InterpolatedDuration `yaml:"defaultKeepAlive"`
 }
+
+type CircuitBreakerLayerConfig struct {
+	TemplateDir InterpolatedString `yaml:"templateDir"`
+}