Update cudf::detail::grid_1d to use thread_index_type

[davidwendt]

Description

Updates the cudf::detail::grid_1d to use thread_index_type instead of int and size_type for the number threads and blocks.
This has become important for launching kernels with more threads than max size_type total bytes for warp-per-row and thread-per-byte algorithms.

Checklist

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

[davidwendt]

/merge