[EHN] let column_name or column_names support callback type

[Zeroto521]

Brief Description

There always has an option called column_name or column_names.
It's used to select the columns of df.
The type could be a single value like Hashable and list values likes Iterable[Hashable].
And this idea is to support callback type.

Originally posted by @ericmjl in #1112 (comment)

Example API

An implicit style and also a trick to select columns.

Select columns	Using callable type	Using Iterable type	df.columns
Select the first three columns	lambda df: df.columns[:3]	['a', 'b', 'c']	pd.Index(list('abcde'))
Select str type columns	lambda df: [i for i in df.columns if instance(i, str)]	['a', 'b', 'c']	pd.Index(['a', 'b', 'c', 1])

[samukweku]

For this, we can pass callables to select_columns