Integrate GPU-Accelerated Channel Simulation + CI Test Pipeline

This MR builds on top of MR !3588 (closed) (feat: GPU Accelerated Channel Simulation Pipeline).

The main portion of the changes is directly taken from MR !3588 (closed), and focuses on integrating the GPU-accelerated channel simulation. On top of that, this MR adds CI-related configurations to introduce a new channel simulation testing pipeline into the CI --> RAN-Channel-Simulation

Note: The last four commits of MR !3588 (closed) add support for GPU channel simulation in the nr_dlsim and nr_ulsim tests. These changes are not integrated here and will be handled in a future MR, where the corresponding nr_dlsim and nr_ulsim tests using GPU channel simulation will also be added into the CI.

For additional background and implementation details, please refer to MR !3588 (closed).

TBD:

• Add documentation (2378f34f)