SNOW-1637945: Add support for TimedeltaIndex attributes

[sfc-gh-nkumar]

Fixes SNOW-1637945

Add support for TimedeltaIndex attributes days, seconds, microseconds, and nanoseconds.

[sfc-gh-helmeleegy]

LGTM.

[sfc-gh-helmeleegy]

Looks good overall. I just think we need to test against null data too.

[sfc-gh-azhan]

Sorry to block this now.
@sfc-gh-mvashishtha and I had a chat today about this. Ideally we should reuse the dt.properties code to do this, we should be able to support this too:
pd.Series([1,2,3]).astype("timedelta64[ns]").dt.seconds
cc @sfc-gh-helmeleegy

[sfc-gh-nkumar]

Sorry to block this now. @sfc-gh-mvashishtha and I had a chat today about this. Ideally we should reuse the dt.properties code to do this, we should be able to support this too: pd.Series([1,2,3]).astype("timedelta64[ns]").dt.seconds cc @sfc-gh-helmeleegy

yeah, that is the plan. We will also use this same method to implement Series.dt.* attributes relevant for timedelta column.
There are two sets of properties. One applicable to datetime columns and one applicable to timedelta columns. dt_property implements all properties applicable to datetime column and timedelta_property implement all properteis applicable to timedelta column.
In both the scenarios code is reused between Series.dt* and [Datetime/Timedelta]Index.* attributes.

[sfc-gh-helmeleegy]

Sorry to block this now. @sfc-gh-mvashishtha and I had a chat today about this. Ideally we should reuse the dt.properties code to do this, we should be able to support this too: pd.Series([1,2,3]).astype("timedelta64[ns]").dt.seconds cc @sfc-gh-helmeleegy

yeah, that is the plan. We will also use this same method to implement Series.dt.* attributes relevant for timedelta column. There are two sets of properties. One applicable to datetime columns and one applicable to timedelta columns. dt_property implements all properties applicable to datetime column and timedelta_property implement all properteis applicable to timedelta column. In both the scenarios code is reused between Series.dt* and [Datetime/Timedelta]Index.* attributes.

That's right. This is the plan.