### 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
if C.SYSTEM_WARNINGS:
            self.warning(msg)
    def banner(self, msg, color=None, cows=True):
        '''
        Prints a header-looking line with cowsay or stars with length depending on terminal width (3 minimum)
        '''
        msg = to_text(msg)
        if self.b_cowsay and cows:
            try:
                self.banner_cowsay(msg)
                return
            except OSError:
                self.warning("somebody cleverly deleted cowsay or something during the PB run.  heh.")
        msg = msg.strip()
        try:
            star_len = self.columns - get_text_width(msg)
        except EnvironmentError:
            star_len = self.columns - len(msg)
        if star_len <= 3:
            star_len = 3
        stars = u"*" * star_len
        self.display(u"\n%s %s" % (msg, stars), color=color)
    def banner_cowsay(self, msg, color=None):