Move cond to torch/_higher_order_ops/ (#108025)
1. Move cond to torch/_higher_order_ops
2. Fix a bug in map, which didn't respect tensor dtype when creating a new one from them. We cannot directly use empty_strided because boolean tensor created by empty_strided is not properly intialized so it causes error "load of value 190, which is not a valid value for type 'bool'" on clang asan environment on CI.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/108025
Approved by: https://github.com/zou3519
