[BUG] Support for `DatetimeIndexResampler`, `PeriodIndexResampler` and `TimedeltaIndexResampler` is missing

[galipremsagar]

Describe the bug
Pandas returns DatetimeIndexResampler, PeriodIndexResampler and TimedeltaIndexResampler depending on the index type on which we are resampling. cudf right now only returns a SeriesResampler or DataFrameResampler, this needs to change to match to pandas. This is the cause of failures in pandas-testing/pandas-tests/tests/resample/test_resample_api.py and many other tests.

Steps/Code to reproduce bug

[1]: import cudf
irmpo
In [2]: index = cudf.date_range(start="2001-01-01", periods=10, freq="1T")

In [3]: sr = cudf.Series(range(10), index=index)

In [4]: sr.resample("3T")
Out[4]: <cudf.core.resample.SeriesResampler at 0x751d2e9452b0>

In [5]: sr.to_pandas().resample("3T")
Out[5]: <pandas.core.resample.DatetimeIndexResampler object at 0x751ce2789d30>

Expected behavior
Match pandas behavior.

Environment overview (please complete the following information)

• Environment location: [Bare-metal, Docker, Cloud(specify cloud provider)]
• Method of cuDF install: [conda, Docker, or from source]
  • If method of install is [Docker], provide docker pull & docker run commands used

Environment details
Please run and paste the output of the cudf/print_env.sh script here, to gather any other relevant environment details

Additional context
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