✨ Add kubeshark-worker-metrics service and document it (#1474)

* Expose worker metrics

* Add metrics documentation

* upd

* Update metrics port configuration

* Update config/configStructs/tapConfig.go

Co-authored-by: M. Mert Yildiran <me@mertyildiran.com>

* Update helm-chart/README.md

Co-authored-by: M. Mert Yildiran <me@mertyildiran.com>

* Update helm-chart/templates/16-worker-service-metrics.yaml

Co-authored-by: M. Mert Yildiran <me@mertyildiran.com>

---------

Co-authored-by: M. Mert Yildiran <me@mertyildiran.com>

config/configStructs/tapConfig.go

@@ -125,6 +125,10 @@ type KernelModuleConfig struct {
 	ImageRepoSecret string          `yaml:"imageRepoSecret" json:"imageRepoSecret"`
 }
 
+type MetricsConfig struct {
+	Port uint16 `yaml:"port" json:"port" default:"49100"`
+}
+
 type TapConfig struct {
 	Docker                  DockerConfig          `yaml:"docker" json:"docker"`
 	Proxy                   ProxyConfig           `yaml:"proxy" json:"proxy"`
@@ -154,6 +158,7 @@ type TapConfig struct {
 	ReplayDisabled          bool                  `yaml:"replayDisabled" json:"replayDisabled" default:"false"`
 	Capabilities            CapabilitiesConfig    `yaml:"capabilities" json:"capabilities"`
 	GlobalFilter            string                `yaml:"globalFilter" json:"globalFilter"`
+	Metrics                 MetricsConfig         `yaml:"metrics" json:"metrics"`
 }
 
 func (config *TapConfig) PodRegex() *regexp.Regexp {