Remove local (in-group) atomic usage from __parallel_find_or (V1)

[SergeyKopienko]

In this PR we remove local (in-group) atomic usage from __parallel_find_or implementation:

• __found_local now is local variable (for each item);
• barriers doesn't required anymore;
• we updates the state of __found_local within one group through __dpl_sycl::__reduce_over_group operation :

                  __found_local = __dpl_sycl::__reduce_over_group(__item_id.get_group(), __found_local,
                                                                  typename _BrickTag::_LocalResultsReduceOp{});

  where _LocalResultsReduceOp is :

  • __dpl_sycl::__minimum (for the __parallel_find_forward_tag);
  • __dpl_sycl::__maximum (for the __parallel_find_backward_tag);
  • __dpl_sycl::__bit_or (for the __parallel_or_tag).

The new operation __dpl_sycl::__bit_or has been defined in the file sycl_defs.h :

#if _ONEDPL_SYCL2020_FUNCTIONAL_OBJECTS_PRESENT
// ...
template <typename _T = void>
using __bit_or = sycl::bit_or<_T>;
#else  // _ONEDPL_SYCL2020_FUNCTIONAL_OBJECTS_PRESENT
// ...
template <typename _T = void>
using __bit_or = sycl::ONEAPI::bit_or<_T>;
#endif // _ONEDPL_SYCL2020_FUNCTIONAL_OBJECTS_PRESENT

[SergeyKopienko]

@danhoeflinger, @julianmi is something that mandatory required to change in this PR?