chore(concrete_cuda): fix tests, reduce test time

- Update concrete-cuda with latest commits in concrete-core
- Add C++ tests based on google test
- Run the tests in the CI with Cuda 11.8 and Cuda 11.1
- Test for many PBS/KS parameters
- Repetitions & samples are set for each parameter set in the PBS test

.github/workflows/concrete_cuda_test.yml

@@ -108,7 +108,7 @@ jobs:
         echo "CUDA_PATH=$OLD_CUDA_PATH" >> "${GITHUB_ENV}"
         echo "$CUDA_PATH/bin" >> "${GITHUB_PATH}"
         echo "LD_LIBRARY_PATH=$OLD_CUDA_PATH/lib:$LD_LIBRARY_PATH" >> "${GITHUB_ENV}"
-        echo "CUDACXX=$OLD_CUDA_PATH/bin/nvcc" >> "${GITHUB_ENV}"
+        echo "CUDACXX=/usr/local/cuda-${{ matrix.old_cuda }}/bin/nvcc" >> "${GITHUB_ENV}"
     - name: Build concrete-cuda with Cuda 11.1
       if: ${{ !cancelled() }}
       run: |
@@ -121,19 +121,7 @@ jobs:
       if: ${{ !cancelled() }}
       run: |
         cd backends/concrete-cuda/implementation/build-old-cuda
-        ./test/test_concrete_cuda
-
-    - name: Slack Notification
-      if: ${{ always() }}
-      continue-on-error: true
-      uses: rtCamp/action-slack-notify@12e36fc18b0689399306c2e0b3e0f2978b7f1ee7
-      env:
-        SLACK_COLOR: ${{ job.status }}
-        SLACK_CHANNEL: ${{ secrets.SLACK_CHANNEL }}
-        SLACK_ICON: https://pbs.twimg.com/profile_images/1274014582265298945/OjBKP9kn_400x400.png
-        SLACK_MESSAGE: "Cuda AWS tests finished with status ${{ job.status }}. (${{ env.ACTION_RUN_URL }})"
-        SLACK_USERNAME: ${{ secrets.BOT_USERNAME }}
-        SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+        ./test/test_concrete_cuda --gtest_filter="Wop*"
 
   stop-runner:
     name: Stop EC2 runner