Refactor checkin table to attendance table

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

data/user.go

@@ -18,7 +18,6 @@ type User struct {
 	UUID            uuid.UUID `json:"uuid" gorm:"type:uuid;uniqueindex;not null"`
 	UserId          uuid.UUID `json:"user_id" gorm:"type:uuid;uniqueindex;not null"`
 	Email           string    `json:"email" gorm:"type:varchar(255);uniqueindex;not null"`
-	Type            string    `json:"type" gorm:"type:varchar(32);index;not null"`
 	Nickname        string    `json:"nickname"`
 	Subtitle        string    `json:"subtitle"`
 	Avatar          string    `json:"avatar"`
@@ -134,7 +133,6 @@ func (self *User) UpdateSearchIndex() error {
 	doc := UserSearchDoc{
 		UserId:          self.UserId.String(),
 		Email:           self.Email,
-		Type:            self.Type,
 		Nickname:        self.Nickname,
 		Subtitle:        self.Subtitle,
 		Avatar:          self.Avatar,