fix: Move metrics plugin to core bundle

pluginmgr/core/plugins.go

@@ -8,6 +8,7 @@ import (
 	"github.com/iotaledger/goshimmer/plugins/gossip"
 	"github.com/iotaledger/goshimmer/plugins/gracefulshutdown"
 	"github.com/iotaledger/goshimmer/plugins/logger"
+	"github.com/iotaledger/goshimmer/plugins/metrics"
 	"github.com/iotaledger/goshimmer/plugins/portcheck"
 	"github.com/iotaledger/goshimmer/plugins/tangle"
 	"github.com/iotaledger/hive.go/node"
@@ -23,4 +24,5 @@ var PLUGINS = node.Plugins(
 	tangle.PLUGIN,
 	gossip.PLUGIN,
 	gracefulshutdown.PLUGIN,
+	metrics.PLUGIN,
 )

pluginmgr/research/plugins.go

@@ -2,7 +2,6 @@ package research
 
 import (
 	"github.com/iotaledger/goshimmer/plugins/analysis"
-	"github.com/iotaledger/goshimmer/plugins/metrics"
 	"github.com/iotaledger/goshimmer/plugins/remotelog"
 	"github.com/iotaledger/hive.go/node"
 )
@@ -10,5 +9,4 @@ import (
 var PLUGINS = node.Plugins(
 	remotelog.PLUGIN,
 	analysis.PLUGIN,
-	metrics.PLUGIN,
 )