For storage, store as JSON rather than BSON

storage/driver/storage_test.go

@@ -1,12 +1,12 @@
 package driver
 
 import (
+	"encoding/json"
 	"local/dndex/storage/entity"
 	"testing"
 	"time"
 
 	"github.com/google/uuid"
-	"go.mongodb.org/mongo-driver/bson"
 )
 
 func TestNewStorage(t *testing.T) {
@@ -37,7 +37,7 @@ func fillStorage(t *testing.T, s *Storage) {
 			Connections: map[string]entity.Connection{p.ID: entity.Connection{p.Name}},
 			Attachments: map[string]entity.Attachment{"filename": {"/path/to/file"}},
 		}
-		b, err := bson.Marshal(o)
+		b, err := json.Marshal(o)
 		if err != nil {
 			t.Fatal(err)
 		}