feat: sentry integration

ref #3

internal/config/proxy_server.go

@@ -7,6 +7,7 @@ type ProxyServerConfig struct {
 	Metrics   MetricsConfig   `yaml:"metrics"`
 	Transport TransportConfig `yaml:"transport"`
 	Dial      DialConfig      `yaml:"dial"`
+	Sentry    SentryConfig    `yaml:"sentry"`
 }
 
 // See https://pkg.go.dev/net/http#Transport
@@ -32,6 +33,7 @@ func NewDefaultProxyServerConfig() ProxyServerConfig {
 		Metrics:   NewDefaultMetricsConfig(),
 		Transport: NewDefaultTransportConfig(),
 		Dial:      NewDefaultDialConfig(),
+		Sentry:    NewDefaultSentryConfig(),
 	}
 }