Link error for alien_core target on archlinux : Blas not found

**Error**
error when linking alien_core targer blas not found

**To Reproduce**
On archlinux (6.0.9.arch1-1), gcc 12.1, CMake 3.25

**Expected behavior**
Link ok

**Additional context**
To solve the problem, a `find_package` and an add to alien_core `target_link_libraries` must be done for blas
