Add Pangea4 host configs

[Bubusch]

Adds the Pangea 4 host config files :

host-config	Description	Compiler	MPI	BLAS-LAPACK
pangea4-base.cmake	base configuration for Pangea4 (CPU cluster) using Hypre, no openMP	X	X	X
pangea4-gcc12.1-hpcxompi2.17.1-onemkl2023.2.0	default gcc build	cray wrappers for gnu (cc, CC, ftn)	HPC-X OpenMPI	oneAPI MKL
pangea4-gcc12.1-openmpi4.1.6-onemkl2023.2.0	alternative gcc build	cray wrappers for gnu (cc, CC, ftn)	OpenMPI	oneAPI MKL
pangea4-gcc12.1-openmpi4.1.6-openblas0.3.23	alternative gcc build	cray wrappers for gnu (cc, CC, ftn)	OpenMPI	OpenBLAS
pangea4-gcc12.1-hpcxompi2.17.1-openblas0.3.23	alternative gcc build	cray wrappers for gnu (cc, CC, ftn)	HPC-X OpenMPI	OpenBLAS

Linked to TPLs' PR #262.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 53.78%. Comparing base (4de1337) to head (62e979a). Report is 104 commits behind head on develop.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #3081 +/- ## =========================================== + Coverage 53.74% 53.78% +0.04% =========================================== Files 1016 1016 Lines 85756 85826 +70 =========================================== + Hits 46092 46165 +73 + Misses 39664 39661 -3 ```

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[Bubusch]

will run integrated tests just before merge (as no rebase line is required)