Update to handle non Adafruit supplied libraries

[veggie2u]

Currently when you try to list libraries the code takes the filename and tries to look up information about it from the Adafruit libraries. If that file or folder is not found in the list, a fairly hidden error happens and it looks like nothing happened.

This change will use the information from the filename and print out the version and a message. No action is allowed on this library.

In the future it would be interesting to also pull community libraries or allow other library locations to find this upgrade info.

You can see in the image that bluepad32 which is not an Adafruit library show in the list as no updateable.

[veggie2u]

This should resolve this reported bug: #89

[tyeth]

This looks sensible enough 👍

[tyeth]

It's worth noting in response to your comments and the idea in general, that the official package manager circup now has support for a pyproject.toml (adafruit/circup#188) to define dependencies.
At the time of the review, on a live stream (adafruit circuitpython deep dives - this time foamyguy, can watch his twitch stream specifically https://www.twitch.tv/videos/1968511177) it was talked about it being useful to support some non-community packages too, ideally git repos.