add wireguard prometheus stats feature flag

- also add .gitignore for IDE files (copied over from felix repo)

Author: electricjesus

.gitignore

@@ -16,3 +16,7 @@
 .go-pkg-cache/
 Makefile.common*
 bin/
+
+# IDE files
+/.idea/
+/.vscode/

pkg/apis/projectcalico/v3/felixconfig.go

@@ -230,7 +230,8 @@ type FelixConfigurationSpec struct {
 	PrometheusGoMetricsEnabled *bool `json:"prometheusGoMetricsEnabled,omitempty"`
 	// PrometheusProcessMetricsEnabled disables process metrics collection, which the Prometheus client does by default, when
 	// set to false. This reduces the number of metrics reported, reducing Prometheus load. [Default: true]
-	PrometheusProcessMetricsEnabled *bool `json:"prometheusProcessMetricsEnabled,omitempty"`
+	PrometheusProcessMetricsEnabled   *bool `json:"prometheusProcessMetricsEnabled,omitempty"`
+	PrometheusWireGuardMetricsEnabled *bool `json:"prometheusWireGuardMetricsEnabled,omitempty"`
 
 	// FailsafeInboundHostPorts is a list of UDP/TCP ports and CIDRs that Felix will allow incoming traffic to host endpoints
 	// on irrespective of the security policy. This is useful to avoid accidentally cutting off a host with incorrect configuration.