Figure out (almost) static builds #1
Description
Currently, AudioFS will be dynamically linked. However, as we use libraries that are fairly mature, they should be statically linked as much as possible to reduce runtime dependencies.
Namely: libfftw3, libjansson
We can statically link on Linux, but that leaves an ugly runtime dependency on getaddrinfo from glibc.
We cannot fully link statically on macOS whatsoever. We should however link our dependencies statically, so we can make use of LTO, as well as make embedding the library into other applications easier.