Fix GPU memory leak for the CUDA unit tests

[sjsprecious]

This PR:

• use the correct option --leak-check full for compute-sanitizer to check the memory leak on the GPU.
• fix a GPU memory leak due to the missing of cudaFree for a bool pointer on the GPU.
• fix multiple GPU memory leaks by using std::swap rather than std::move in the move constructor and assignment in a CUDA class.

All the GPU unit tests are now passed for GPU memory check on Derecho's A100 GPU. The integration test is not checked for GPU memory leak because it takes too long.

fix #598

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.27%. Comparing base (46d0a74) to head (6206845).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #600 +/- ## ======================================= Coverage 93.27% 93.27% ======================================= Files 49 49 Lines 3464 3467 +3 ======================================= + Hits 3231 3234 +3 Misses 233 233 ```

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[sjsprecious]

@mattldawson @K20shores @mwaxmonsky I ran the GPU memory leak check for the CUDA integration test on Derecho's A100 GPU. It passed the check within 10963461 ms (~3 hours and 10 minutes).