[LSP] 试用Python开发新包 lsp-pyright

Pylance = Pyright + IntelliCode AI models (not open-source)

a) General. You may install and use any number of copies of the software only with Microsoft Visual Studio, Visual Studio for Mac, Visual Studio Code, Azure DevOps, Team Foundation Server, and successor Microsoft products and services (collectively, the “Visual Studio Products and Services”) to develop and test your applications.