Formatter: Preserve end-of-line comments in imports

We turn dangling end-of-line comments in the parentheses of import-from into own line comments instead of preserving them

black:
```python
from .fields import (  # NOQA
    GeometryField,
)
```

ours:
```python
from .fields import (
    # NOQA
    GeometryField,
)
```