Summary: - Add support for int64_t indices in TBE inference [1/N]

Differential Revision: D61813383

Summary:
- Add support for int64_t indices in TBE inference [2/N]

- Convert `pruned_array_lookup_cuda` to use index_t

Differential Revision: D62271409

Summary: - Convert `pruned_hashmap_lookup_cuda` to use index_t

Differential Revision: D62277673

Summary: - Convert `pruned_array_lookup_cpu` to use `index_t`

Differential Revision: D62470736

Summary: - Convert `pruned_hashmap_lookup_cpu` to use `index_t`

Differential Revision: D62472965

Summary: - Convert `PrunedMapCPU::lookup` to use `index_t`

Differential Revision: D62602764

…ytorch#3189)

Summary:
X-link: facebookresearch/FBGEMM#284

Pull Request resolved: pytorch#3189

- Fix `index_remapping` in `pruned_array_lookup` to be `int64_t` always, since it is set up before we are provided `indices` and `offsets`

Differential Revision: D63567553