CLI infrastructure #54

NEETBOX Cli was proposed for the following considerations:

• Users can create an empty project through neet init, containing premade configuration files and basic folder structure. We hope this functionality will be similar to react cli
• Users can view status of neetbox processes, and monit results marked by @watch
• Users can launch neetbox server and frontend via cli command neet serve
• Users can easily switch the data set being used or manage other file resources through cli. These file resources can be scattered everywhere. When users want to use them, they only need to select them in the cli, and neetbox will create soft links or modify the configuration files.

Since we are here to bring the new cli tools, @AndPuQing would like to introduce click for cli, which would be nice.