Refactor Pretty control sequence escaping

[LHolten]

Motivation

The Pretty formatter was applying escaping to control characters, but only for the message field and errors.
Another issue is that the escaped control characters often make the message field unreadable because of colour codes #3369.

Solution

First, this PR fixes the Pretty formatter to apply escaping consistently to all fields (the DefaultFields formatter seems to also skip escaping some field, but I did not want to fix it).

It also changes the escaping on the message field specifically to remove CSI codes entirely instead of just escaping them. While this doesn't fix #3369 entirely, it makes the problem a bit less bad, because now you can at least read the message.
This solution does not make any changes to the public API, because I do not know what the best solution is to solving the trusted control characters problem.

[LHolten]

I just realized that this doesn't help with the ansi colour codes at all, because those are normal characters after the escape character. I will update this PR with a better implementation to skip the colour codes.

[LHolten]

I just realized that this doesn't help with the ansii colour codes at all, because those are normal characters after the escape character. I will update this PR with a better implementation to skip the colour codes.

Fixed and added a test.