Add owner to event table

Signed-off-by: Asai Neko <sugar@sne.moe>

data/event.go

@@ -17,6 +17,7 @@ type Event struct {
 	Type      string    `json:"type" gotm:"type:varchar(255);index;not null"`
 	StartTime time.Time `json:"start_time" gorm:"index"`
 	EndTime   time.Time `json:"end_time" gorm:"index"`
+	Owner     uuid.UUID `json:"owner" gorm:"type:uuid;index;not null"`
 }
 
 type EventSearchDoc struct {