Add Attendance state for attendance table

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

data/attendance.go

@@ -21,6 +21,7 @@ type Attendance struct {
 	EventId      uuid.UUID `json:"event_id" gorm:"type:uuid;uniqueIndex:unique_event_user;not null"`
 	UserId       uuid.UUID `json:"user_id" gorm:"type:uuid;uniqueIndex:unique_event_user;not null"`
 	Role         string    `json:"role" gorm:"type:varchar(255);not null"`
+	State        string    `json:"state" gorm:"type:varchar(255);not null"`
 	KycInfo      string    `json:"kyc_info" gorm:"type:text"`
 	CheckinAt    time.Time `json:"checkin_at"`
 }