Adding BSC's hsmcompute site config spack.yaml parameters

I've added the final spack.yaml that I used to install 23.06 in hsmcompute. There is also a partial file in case we want to concatenate our parameters to a new spack.yaml.

site-config/hsmcompute/site-params.yaml

+  packages:
+    cuda:
+      buildable: false
+      compiler: []
+      externals:
+      - modules:
+        - cuda/11.3
+        spec: cuda@11.3.58
+      providers: {}
+      target: []
+      variants: +allow-unsupported-compilers
+      version:
+      - 11.3.58
+    nccl:
+      buildable: false
+      externals:
+      - modules:
+        - nvhpc/21.5
+        spec: nccl@2.8.3 +cuda cuda_arch=72
+        prefix: /apps/NVHPC/2021.215/Linux_ppc64le/21.5/comm_libs/nccl
+      version:
+      - 2.13.4
+    cudnn:
+      buildable: false
+      externals:
+      - modules:
+        - cudnn/8.6.0
+        spec: cudnn@8.6.0
+        prefix: /apps/CUDNN/8.6.0
+      version:
+      - 8.6.0
+    python:
+      version: [3.8.11]
+    all:
+      target: [ppc64le]
+      compiler: [gcc@10.1.0]
+      providers:
+        blas: [essl, openblas, netlib-lapack]
+        lapack: [openblas, netlib-lapack]
+        scalapack: [netlib-scalapack]
+  compilers:
+  - compiler:
+      spec: gcc@10.1.0
+      paths:
+        cc: /apps/GCC/10.1.0/bin/gcc
+        cxx: /apps/GCC/10.1.0/bin/g++
+        f77: /apps/GCC/10.1.0/bin/gfortran
+        fc: /apps/GCC/10.1.0/bin/gfortran
+      flags: {}
+      operating_system: rhel8
+      target: ppc64le
+      modules: []
+      environment: {}
+      extra_rpaths: []
+  repos:
+  - /apps/SPACK/0.19.2/spack-ebrains-releases/ebrains-23-06-stable-hsmcompute