Inhibit automatic screen locking when connected via USB CDC

[dogtopus]

Description of the feature you're suggesting.

Currently automatic screen lock will not be inhibited when Flipper is connected from e.g. qFlipper or PuTTY via USB CDC. This gets annoying when I need to manage files or use the console.

Most scenes seem to inhibit screen lock already so it's probably not needed to introduce an entirely new feature.

Anything else?

No response