Moving mlog to corelibs (#16915)

* Moving mlog to corelibs

* Regenerating app layers

* Fix golangci-lint problem

* Fixing golangci-lint errors

* Renaming from corelibs to shared

* Renaming from corelibs to shared

* Fixing import

* Fixing merge problems

* Fixing build

shared/filestore/filesstore_test.go

@@ -16,7 +16,7 @@ import (
 	"github.com/stretchr/testify/suite"
 	"github.com/xtgo/uuid"
 
-	"github.com/mattermost/mattermost-server/v5/mlog"
+	"github.com/mattermost/mattermost-server/v5/shared/mlog"
 )
 
 func randomString() string {

shared/filestore/localstore.go

@@ -13,7 +13,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v5/mlog"
+	"github.com/mattermost/mattermost-server/v5/shared/mlog"
 )
 
 const (

shared/filestore/s3store.go

@@ -17,7 +17,7 @@ import (
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/pkg/errors"
 
-	"github.com/mattermost/mattermost-server/v5/mlog"
+	"github.com/mattermost/mattermost-server/v5/shared/mlog"
 )
 
 // S3FileBackend contains all necessary information to communicate with