Provisioning: Move provisioning extras to OSS extensions (#108167)

* Move provisioning extensions to OSS

* Fix the wire stuff

* Move it to extras packages

* Add hack to assert test differently for enterprise

pkg/registry/apis/provisioning/extras/register.go

@@ -0,0 +1,13 @@
+package extras
+
+import (
+	"github.com/grafana/grafana/pkg/registry/apis/provisioning"
+	"github.com/grafana/grafana/pkg/registry/apis/provisioning/webhooks"
+)
+
+// HACK: This is a hack so that wire can uniquely identify dependencies
+func ProvideProvisioningOSSExtras(webhook webhooks.WebhookExtraBuilder) []provisioning.ExtraBuilder {
+	return []provisioning.ExtraBuilder{
+		webhook.ExtraBuilder,
+	}
+}