New gcc 16.1 (gnu/16.1) based modules

Modules based on the latest GNU Compiler Collection (GCC 16.1) are now available.

gnu/16.1
├── fftw/3.3.11
├── libxc/7.0.0
├── likwid/5.5.1
├── openblas/0.3.30
├── openmpi/4.1.8
│   ├── fftw/3.3.11
│   └── boost/1.91.0.
└── openmpi/5.0.10
    ├── boost/1.91.0
    ├── elpa/2026.02.001
    ├── fftw/3.3.11
    ├── petsc/3.22
    ├── phdf5/2.1.1
    ├── plumed/2.10.0
    └── scalapack/2.2.2