make module system more flexible

[stebo85]

No description provided.

[stebo85]

current module load is hardcoded to singularity
-> should be flexible to also allow apptainer (in case they change the binary name soon)

current module load is hardcoded to /cvmfs/...
-> should be flexible because cvmfs could be run in user space on modern HPCs and would become /home/user/cvmfsexec...

current module system is generated on CVMFS node
-> should be in github so pull requests can be made against it for easier updating without touching cvmfs node

currently --silent is hardcoded
-> should be a variable

currently --nv is given via custom singularity_options variable
-> should be set automatically based on GPU availability

[stebo85]

Currently our module system does not support the bundling of different tools in a meta-module. This would be great however, to enable this workflow: NeuroDesk/neurocontainers#596

[stebo85]

The new module system would also allow us to make the Application menu behaviour more consistent: NeuroDesk/neurocontainers#209