[FEA] Support casting operations on nested types

[kuhushukla]

Is your feature request related to a problem? Please describe.
Currently we support castTo on primitive data types. This request is to extend this functionality/operator to nested types like lists, structs, and list of structs.

Describe the solution you'd like
One should be able to call a cudf function to cast an array(floats) for example to an array(doubles). We should also allow other valid casts that we support today to nested type category.

[github-actions]

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[github-actions]

This issue has been labeled inactive-90d due to no recent activity in the past 90 days. Please close this issue if no further response or action is needed. Otherwise, please respond with a comment indicating any updates or changes to the original issue and/or confirm this issue still needs to be addressed.