Document how to avoid mypy reporting

[MarcSkovMadsen]

When using .hvplot on a dataframe or series, mypy will report a operator missing problem. See https://mypy.readthedocs.io/en/stable/error_code_list.html#code-operator.

You can solve this by adding # type: ignore[operator]. This is quite cumbersome to add many places in your docs.

It would be very nice if this was discussed and best practices documented in the documentation.

[MarcSkovMadsen]

As long as .hvplot is not understood by mypy, ruff etc there will be a lot of friction.

For example ruff configuration in my org requires a return type on functions. Thus I need to add -> hvPlotTabular to all methods returning something generated by hvplot and then mypy complains because return type of .hvplot is not understood because hvplot method is not understood.