Autoformat ApplyTypeAnnotationsVisitor (#642)

I find it difficult sometimes to read method and function signatures
when there are multiple arguments with type annotations - left-aligning
the arguments makes it much easier for me to skim and see, using mostly
my automatic visual resoning,
- the argument names
- the argument types
- the return type

Without this, I feel like I'm trying to run a parser in my head, which
is not as fast and distracts me from code-skimming.

This change was generated using thte new AddTrailingCommas codemod
(which I'll put in a separate PR) via the command
```
python -m libcst.tool codemod add_trailing_commas.AddTrailingCommas ./libcst/codemod/visitors/_apply_type_annotations.py
```

Wait for CI - this is pure formatting, it should be very safe