Show warning in terminal every time a local package is loaded or installed

[ndf]

I like this module, but once you forget it is configured, it can bite you when you use a local package without noticing.

Therefor it would be useful when every time composer-localdev-plugin fetches a local package, it shows a warning in the terminal.

[gossi]

That might be broken by now, but when you run composer, it writes on the output, that a packaged got symlinked during installation.