Add user CRUD actions, add permission level for user

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

service/checkin/checkin.go

@@ -18,7 +18,7 @@ func Checkin(ctx *gin.Context) {
 		})
 		return
 	}
-	data.SetCheckinState(userId.(uuid.UUID), time.Now())
+	data.UpdateCheckin(userId.(uuid.UUID), time.Now())
 	ctx.JSON(http.StatusOK, gin.H{
 		"status": "success",
 	})