Mark all cuco kernels as static so they have hidden visibility #359

Job	Run time
Doxygen check	32s
Compute matrix	3s
Verify Dev Containers / Verify devcontainers	21s
CUDA11.8 gcc / amd64 / Build gcc11/C++17 / Build gcc11/C++17	3m 23s
CUDA12.3 gcc / amd64 / Build gcc12/C++17 / Build gcc12/C++17	3m 41s
CUDA12.3 gcc / arm64 / Build gcc12/C++17 / Build gcc12/C++17	3m 36s
Verify Dev Containers / List devcontainers	5s
Verify Dev Containers / cuda12.3-gcc12	1m 8s
Verify Dev Containers / cuda11.8-gcc11	1m 6s
Verify Dev Containers / cuda12.3-gcc12	1m 11s
CUDA11.8 gcc / amd64 / Test gcc11/C++17 / Test gcc11/C++17	1m 12s
CUDA12.3 gcc / arm64 / Test ${{ inputs.test_name }}	0s
CUDA12.3 gcc / amd64 / Test gcc12/C++17 / Test gcc12/C++17	42s
CI success	1s
	17m 1s

Provide feedback