Fix documentation builds with pandas 2 changes

[vyasr]

Description

The changes to the Index hierarchy cudf that we made for pandas 2 compatibility (removing GenericIndex and having all single-columned indexes inherit directly from Index, which in turn now inherits from SingleColumnFrame, and therefore inherits from Frame) means that Index itself now inherits methods from Frame. Many of those methods should not be defined on Index types. This PR moves those definitions to IndexedFrame to avoid these problems.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[bdice]

Here is a diff of (documented) Index APIs between cudf (<) and pandas (>). We should make sure we deprecate/drop anything in cudf that was in pandas 1 but deprecated/dropped from pandas 2.

Only in cudf:
< DatetimeIndex.isocalendar
< Index.deserialize
< Index.device_deserialize
< Index.device_serialize
< Index.find_label_range
< Index.from_arrow
< Index.from_pandas
< Index.host_deserialize
< Index.host_serialize
< Index.isnull
< Index.nlevels
< Index.notnull
< Index.serialize
< Index.str
< Index.to_arrow
< Index.to_cupy
< Index.to_dlpack
< Index.to_numpy
< Index.to_pandas
< Index.tolist
< MultiIndex.from_arrow
< RangeIndex.to_arrow
< RangeIndex.to_numpy

Only in pandas 2:
> CategoricalIndex.add_categories
> CategoricalIndex.as_ordered
> CategoricalIndex.as_unordered
> CategoricalIndex.map
> CategoricalIndex.ordered
> CategoricalIndex.remove_categories
> CategoricalIndex.remove_unused_categories
> CategoricalIndex.rename_categories
> CategoricalIndex.reorder_categories
> CategoricalIndex.set_categories
> DatetimeIndex.as_unit
> DatetimeIndex.date
> DatetimeIndex.day_name
> DatetimeIndex.day_of_week
> DatetimeIndex.freq
> DatetimeIndex.freqstr
> DatetimeIndex.indexer_at_time
> DatetimeIndex.indexer_between_time
> DatetimeIndex.inferred_freq
> DatetimeIndex.is_month_end
> DatetimeIndex.is_month_start
> DatetimeIndex.is_quarter_end
> DatetimeIndex.is_quarter_start
> DatetimeIndex.is_year_end
> DatetimeIndex.is_year_start
> DatetimeIndex.mean
> DatetimeIndex.month_name
> DatetimeIndex.normalize
> DatetimeIndex.snap
> DatetimeIndex.std
> DatetimeIndex.strftime
> DatetimeIndex.time
> DatetimeIndex.timetz
> DatetimeIndex.to_period
> DatetimeIndex.to_pydatetime
> DatetimeIndex.tz
> Index.T
> Index.argmax
> Index.argmin
> Index.asof
> Index.asof_locs
> Index.delete
> Index.drop
> Index.droplevel
> Index.get_indexer_for
> Index.get_indexer_non_unique
> Index.identical
> Index.inferred_type
> Index.insert
> Index.is_
> Index.item
> Index.map
> Index.nbytes
> Index.putmask
> Index.ravel
> Index.reindex
> Index.slice_indexer
> Index.slice_locs
> Index.symmetric_difference
> Index.value_counts
> Index.view
> IndexSlice
> IntervalIndex.closed
> IntervalIndex.contains
> IntervalIndex.from_arrays
> IntervalIndex.from_tuples
> IntervalIndex.is_empty
> IntervalIndex.is_non_overlapping_monotonic
> IntervalIndex.is_overlapping
> IntervalIndex.left
> IntervalIndex.length
> IntervalIndex.mid
> IntervalIndex.overlaps
> IntervalIndex.right
> IntervalIndex.set_closed
> IntervalIndex.to_tuples
> MultiIndex.append
> MultiIndex.copy
> MultiIndex.drop
> MultiIndex.dtypes
> MultiIndex.get_loc_level
> MultiIndex.get_locs
> MultiIndex.levshape
> MultiIndex.remove_unused_levels
> MultiIndex.reorder_levels
> MultiIndex.set_codes
> MultiIndex.set_levels
> MultiIndex.sortlevel
> MultiIndex.to_flat_index
> MultiIndex.truncate
> PeriodIndex
> PeriodIndex.asfreq
> PeriodIndex.day
> PeriodIndex.day_of_week
> PeriodIndex.day_of_year
> PeriodIndex.dayofweek
> PeriodIndex.dayofyear
> PeriodIndex.days_in_month
> PeriodIndex.daysinmonth
> PeriodIndex.end_time
> PeriodIndex.freq
> PeriodIndex.freqstr
> PeriodIndex.from_fields
> PeriodIndex.from_ordinals
> PeriodIndex.hour
> PeriodIndex.is_leap_year
> PeriodIndex.minute
> PeriodIndex.month
> PeriodIndex.quarter
> PeriodIndex.qyear
> PeriodIndex.second
> PeriodIndex.start_time
> PeriodIndex.strftime
> PeriodIndex.to_timestamp
> PeriodIndex.week
> PeriodIndex.weekday
> PeriodIndex.weekofyear
> PeriodIndex.year
> RangeIndex.from_range
> TimedeltaIndex.as_unit
> TimedeltaIndex.ceil
> TimedeltaIndex.floor
> TimedeltaIndex.mean
> TimedeltaIndex.round
> TimedeltaIndex.to_pytimedelta

[vyasr]

Let's handle these in a follow-up PR. We''ll need to look case-by-case since many if not most of these are likely real differences (cudf features pandas doesn't have or pandas features cudf doesn't have).