Supported Client and Server Lists Should not rely on internet connection

[mrudd81]

Is your feature request related to a problem?

My dev environment is sandboxed from the internet, so opening a local Swagger Editor does not allow me to use the built-in generator functions normally available with an internet connection.

Describe the solution you'd like

Allow Editor to reference a local/offline copy of available server/client platforms instead of only reaching out to the internet for the most current. Essentially, Editor should be able to have full functionality offline.

I understand the gain from being able to access changes to supported languages as they come out, but devs should be able to run with whatever's available at the time, or to define which languages they want to use and download those dependencies instead. Otherwise, Editor really isn't truly "dependency-free". Code may still attempt to fetch the latest online, but if the connection isn't available, it should still execute with what's currently available.

Describe alternatives you've considered

I've looked through the Editor code to see if it's possible to "hijack" the process, but the amount of time it is taking outweighs needing to just use it without the functionality (using Codegen in the meantime).

Additional context

N/A