Question: SHARED Package

Dear @elylucas , ionic team and community,

thank you very much for this nice tutorial on how to build a backend (with NestJS) and frontend (with Ionic) and the corresponding starter package here. However, i was wondering, if it would be possible to add some kind of shared package (besides the client and server package) that share some common models and interfaces.

Currently, for example, the server has strongly typed classes (e.g., the `Mission`), however, the client does not get this model definition.

On the one hand, this would reduce the need to maintain the same structures on client and server side. On the other, both parts (client & server) would work with / on the same structures. What do you think about this?

All the best

审查现有的客户端和服务器端软件包，并将服务器端强类型的 Mission 类与客户端中对应的使用方式进行比较。确定共享通用模型和接口的范围及软件包结构，并将完成标准定义为双方都使用共享定义，且不存在重复的结构。

由索引模型根据 Issue 内容生成。