Allow to use UtUtils for different languages in one project

[EgorkaKulikov]

Description

We use base package name for all UtUtils classes.
After that, we create language-specific package in it named after the language and locate the class in it.
It allows to avoid name clashing

This change introduces different util classes for different languages, so some objects are replaced with classes, some methods are refactored to know about the current language.

Fixes # (1080)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• Refactoring (typos and non-functional changes)

How Has This Been Tested?

Manual Scenario

Check that there are no more compilation clashes.
Check that the logic of util classes and their usage did not changed.

Checklist (remove irrelevant options):

This is the author self-check list

• 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 existed one is altered
• No new warnings
• New tests have been added
• All tests pass locally with my changes