ENH: copy keyword to set_axis
This also opens the option of deprecating `inplace` here.

- [ ] closes #xxxx (Replace xxxx with the Github issue number)
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@Dr-Irv im not clear on what mypy is asking for.  help? > @Dr-Irv im not clear on what mypy is asking for. help?

I think the issue is as follows.  In `core/generic.py`, you have the `inplace` argument on the 3rd overload typed as:
```python
inplace: bool_t | lib.NoDefault = ...,
```
But in `series.pyi` and `frame.pyi`, the 3rd overload has:
```python
inplace: bool = ...
```

You have to make sure the signatures are the same in the superclass and subclass for each overload, and that the declared method (without `@overload`) has all the possible types of each argument that are specified across all overloads.
 green, booyah Thanks @jbrockmendel 