Initial implementation of lazy JLLs for LinearAlgebra (#57719)
This alters CompilerSupportLibraries_jll, OpenBLAS_jll and
libblastrampoline_jll to use `LazyLibrary` objects and thereby be loaded
only upon first `dlopen()` or `ccall()` to the individual library
objects. Note that this is one of the more complicated cases, as
`libblastrampoline` must have OpenBLAS_jll added as a dynamic dependency
(as it does not actually have it listed in its shared object headers)
and also has some on-load callbacks that must be invoked.
Long-term, I would like to replace the bespoke JLLs here with actual JLL
source code, and vendor a version of `LazyJLLWrappers` in-tree to do the
actual code generation even for Base. That is left as future work.
[0] https://github.com/JuliaLang/LinearAlgebra.jl/pull/1235
