feat: add service and model

storage/model/user.go

@@ -1,6 +1,8 @@
 package model
 
-import "time"
+import (
+	"time"
+)
 
 type User struct {
 	UserEditable
@@ -8,6 +10,7 @@ type User struct {
 	CreatedAt time.Time  `json:"createdAt"`
 	UpdatedAt *time.Time `json:"updatedAt"`
 	GoogleId  string     `json:"-"`
+	Games     []Game
 }
 
 type UserEditable struct {