Add an option to show library classes' graphs in visualization

[CaelmBleidd]

Description

I added an option to enable library classes' graphs visualization.

Fixes #946

Type of Change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Automated Testing

Not applicable.

Manual Scenario

Set org.utbot.framework.UtSettings#getShowLibraryClassesInVisualization in true and run generation using the plugin on it. Look at the visualization. Proof:

Checklist (remove irrelevant options):

• The change followed the style guidelines of the UTBot project
• Self-review of the code is passed
• The change contains enough commentaries, particularly in hard-to-understand areas
• New documentation is provided or existing one is altered
• No new warnings
• All tests pass locally with my changes

[dtim]

Please look at the conditions, it seems that a typo changes the logic.

[dtim]

LGTM