[oneDPL] Added "in order" queue support

[MikeDvorskiy]

[oneDPL] Added "in order" queue support.

We introduce __dpl_sycl::__event and __dpl_sycl::sumbit(..) wrappers.

1. For out_of_order queue the mentioned wrappers work as sycl::event and sycl::queue::submit, set sycl dependencies and return sycl event.
2. For in_order queue __dpl_sycl::sumbit doesn't set sycl dependencies and dosn't return sycl event. To provide a sync oneDPL call __dpl_sycl::__event calls sycl::queue::wait.