Feature Request: Added max line length

This is a feature request for a max line length option. Uglify has a similar one available.

```JavaScript
var options = {
code: true,
comments: true,
presets: [
['babel-preset-babili', { maxLineLength: 500 }]
]
};
```

Start by comparing Uglify’s max-line-length behavior with the babel-preset-babili configuration shown in the issue, then locate where preset options are accepted and passed to generated output. Define the option’s semantics and verify output against representative long lines; the issue names no repository files or tests, so those entry points must be found first.

Written by the indexing model from the issue text.