### Summary

Add preflight checks to `lib/ansible/cli/__init__.py` for both the local locale and the fsencoding to ensure they are `UTF-8`, and abort when they are not.

We implicitly require this now, but have never strictly enforced it. Due to using `pathlib` in more places, to avoid undefined behavior in our codebase, due to the utf-8 expectation, check this early and fail fast.

### Issue Type

Feature Idea

### Component Name
```
lib/ansible/cli/__init__.py
```
### Additional Information

We may also need to evaluate the `C` locale.  I know some users are running ansible from devices with only the `C` locale.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
from __future__ import absolute_import, division, print_function
__metaclass__ = type
from unittest.mock import MagicMock
import pytest
from ansible.module_utils.six import PY3
from ansible.utils.display import Display, get_text_width, initialize_locale
from ansible.utils.multiprocessing import context as multiprocessing_context
def test_get_text_width():
    initialize_locale()
    assert get_text_width(u'コンニチハ') == 10
    assert get_text_width(u'abコcd') == 6
    assert get_text_width(u'café') == 4
    assert get_text_width(u'four') == 4
    assert get_text_width(u'\u001B') == 0
    assert get_text_width(u'ab\u0000') == 2
    assert get_text_width(u'abコ\u0000') == 4
    assert get_text_width(u'🚀🐮') == 4
    assert get_text_width(u'\x08') == 0
    assert get_text_width(u'\x08\x08') == 0
    assert get_text_width(u'ab\x08cd') == 3
    assert get_text_width(u'ab\x1bcd') == 3
    assert get_text_width(u'ab\x7fcd') == 3
    assert get_text_width(u'ab\x94cd') == 3
    pytest.raises(TypeError, get_text_width, 1)
    pytest.raises(TypeError, get_text_width, b'four')
@pytest.mark.skipif(PY3, reason='Fallback only happens reliably on py2')
def test_get_text_width_no_locale():