Automate connection with a vscode extension

[legomushroom]

Currently, you have to manually run the extension every time you connect to a Codespace which is not ideal user flow. One option to improve this is to have a vscode extension that, when detects that user connects to a Codespace, automatically starts gh net extension in background.

At the beginning, the vscode extension may require the gh cli and gh net extension setup as usual but in future may install all required tools automatically.