Type DataFrame (#1481)

* Type `DataFrame`

* correct axis defaults

* add note about `from_dataframe` input type

* correct type for `clip`

* leave the `axis` annotation in `clip` alone

* correct more defaults

* add more aliases

* product alias

* agg alias

* fixup aggregate

* move xs to ndframe, correct `key` and `level` types, add test

* mypy fix for series.xs override

* fix pyright too

* pyrefly too

* fixup pytest 😩

* use rdiv alias

Author: MarcoGorelli