Add histtype argument to pandas.Series.plot.hist()

[AllanLRH]

Would be nice if pandas either

1. Propagated keyword arguments to Matploblib hist (I believe there's an issue about it here: BUG: pass *args and **kwargs for wrapped methods in Groupby (#14107) #14109 )
2. Explicitly took the histtype argument, since histtype='stepfilled' can greatly speed up the histogram plot rendering.

[mzeitlin11]

Similar issue looks to have been closed in #23992 with #37063 testing usage of histtype.