Add new SLURM template for Taurus

Adds a SLURM template for HPC system taurus.

I tried to use **long names** for all `SBATCH` parameters to increase the readability.

I introduced an other *intermediate* variable with `TBG_coresPerGPU=8` to differentiate better between
- `!TBG_tasks` == total number of GPUs
- `!TBG_tasksPerNode` == GPUs per node * MPI_task per GPU (=1), new alias `!TBG_mpiTasksPerNode`
- `!TBG_coresPerGPU` ratio #CPUs to #GPUs and if one likes to block them (usually *yes*)