Plugins: Introduce plugin package specific logger (#62204)

* refactor

* implement with infra log for now

* undo moving

* update package name

* update name

* fix tests

* update pretty signature

* update naming

* simplify

* fix typo

* delete comment

* fix import

* retrigger

pkg/plugins/manager/loader/loader_test.go

@@ -15,9 +15,9 @@ import (
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/stretchr/testify/require"
 
-	"github.com/grafana/grafana/pkg/infra/log/logtest"
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/plugins/config"
+	"github.com/grafana/grafana/pkg/plugins/log"
 	"github.com/grafana/grafana/pkg/plugins/manager/fakes"
 	"github.com/grafana/grafana/pkg/plugins/manager/loader/initializer"
 	"github.com/grafana/grafana/pkg/plugins/manager/signature"
@@ -570,7 +570,7 @@ func TestLoader_setDefaultNavURL(t *testing.T) {
 				},
 			}},
 		}
-		logger := &logtest.Fake{}
+		logger := log.NewTestLogger()
 		pluginWithDashboard.SetLogger(logger)
 
 		t.Run("Default nav URL is not set if dashboard UID field not is set", func(t *testing.T) {