move all imports to own domain

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/sync/manager.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/unistack-org/micro/v3/store"
+	"go.unistack.org/micro/v3/store"
 )
 
 func (c *syncStore) syncManager() {

util/sync/options.go

@@ -3,7 +3,7 @@ package sync
 import (
 	"time"
 
-	"github.com/unistack-org/micro/v3/store"
+	"go.unistack.org/micro/v3/store"
 )
 
 // Options represents Sync options

util/sync/sync.go

@@ -1,5 +1,5 @@
 // Package sync will sync multiple stores
-package sync
+package sync // import "go.unistack.org/micro/v3/util/sync"
 
 import (
 	"context"
@@ -8,7 +8,7 @@ import (
 	"time"
 
 	"github.com/ef-ds/deque"
-	"github.com/unistack-org/micro/v3/store"
+	"go.unistack.org/micro/v3/store"
 )
 
 // Sync implements a sync in for stores