Add GPU_id param for DESC

[johnarevalo]

Without the GPU_id param, DESC method does not use the GPU.

[codecov[bot]]

Codecov Report

Merging #372 (07a63d2) into main (2ae3d08) will not change coverage. The diff coverage is 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #372 +/- ## ======================================= Coverage 53.34% 53.34% ======================================= Files 22 22 Lines 1854 1854 ======================================= Hits 989 989 Misses 865 865 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `53.34% <100.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=theislab#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://codecov.io/gh/theislab/scib/pull/372?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=theislab) | Coverage Δ | | |---|---|---| | [scib/integration.py](https://codecov.io/gh/theislab/scib/pull/372?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=theislab#diff-c2NpYi9pbnRlZ3JhdGlvbi5weQ==) | `36.20% <100.00%> (ø)` | |