feat: 🎨 server

[GuoWQ222]

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Descriptions of this pull request:

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[panxuc]

It is suggested to divide the clients into independent Ships and Teams, otherwise it could be extremely hard to realize functions such as AddPlayer.

Moreover, the progress of deletion of THUAI6 codes shall be accelerated.

[asdawej]

This PR is too long. It's suggested that we'd better firstly finish RpcServices.cs, ignoring the other parts (comment them out); and by this we can merge it as a staged progress and start our fundamental server test before Sunday.