feat: SEO backend data (1/4)

internal/infrastructure/persistence/models/siteModel.go

@@ -11,6 +11,9 @@ type Site struct {
 	DefaultRobots        string    `gorm:"size:16;not null"`
 	Locale               *string   `gorm:"size:35"`
 	IsDefault            bool      `gorm:"not null"`
+	SiteName             string    `gorm:"size:100;not null;default:''"`
+	TitleTemplate        string    `gorm:"size:200"`
+	DefaultDescription   string    `gorm:"size:320;not null;default:''"`
 	CreatedAt            time.Time `gorm:"autoCreateTime"`
 	UpdatedAt            time.Time `gorm:"autoUpdateTime"`
 }