Meson build system

[MaxMignolet]

This PR contains a new build system based on Meson. It improves the detection of libraries which (almost) fully automated . It also supports incremental compilation. I tested it on an intel mac, Ubuntu 22, and MareNostrum 5 with minimal issues. Feedback and testing on a wider range of machines/installations would be welcome.

Installation instruction have been added to INSTALL.md.

[MaxMignolet]

Small note: I had to comment a call to an interface which had no implementation (in src/libolle/type_symmetrylist.f90). I'm not sure if this a real issue or not since it was compiling fine with build_things.sh.

[mjv500]

Trying out now. Real time comments below:

• does not recognize -framework accelerate on MacOS on init, but then uses it correctly during build. confusing
• presumes openblas, I had to degrade to blas in meson.build
• The position of the Meson section in the installation doc mixes it with some other sections which may not be appropriate. To be checked.
• build works and runs super quickly on my laptop.
• in ./tests I had to add a link to the bin directory - having a separate meson build dir is good, but some paths are missing.
• 2 tests fail. One is thermal_conductivity_2023 which probably does not need to be run. It is in make_all_testfiles.sh but not in the main build tree (at least my build did not make it)

[MaxMignolet]

List of improvements:

• I added symlinks to the master bin directory instead of just inside build/bin.
• I degraded openblas to simply blas (which should be provided by lapack).
• I added thermal_conductivity_2023 to the build project.
  For the tests, dump_dynamical_matrices fails only on my mac. It does not produce any output file for some reasons. On my ubuntu all the test succeed.

And for the documentation, I will improve it in another iteration.

[mjv500]

Looks correct and functional now. Might add examples for other machines, MPI checks and other stuff. I don't know Meson enough to confirm these other options are present/easy/possible

[mjv500]

The compile and test phase on GitHub times out after 20 min. @MaxMignolet you can increase the timeout duration by hand in .github/workflows/ci_simple_compilation_and_test.yml