build: initialize meson build system

[mochaaP]

I'm adding this to meson's package registry: https://github.com/mesonbuild/wrapdb.

[hanickadot]

can this use only single-header one? I'm worried I will forget to add files to the meson file and will break someone, as I'm not using meson

[bgilbert]

Probably a good idea to add a Meson build to CI here, since otherwise any future problems will only show up in WrapDB's CI, after a release is tagged.

[mochaaP]

@hanickadot

can this use only single-header one? I'm worried I will forget to add files to the meson file and will break someone, as I'm not using meson

Since this is an interface-only library, the files list doesn't actually matter - it's just a hint for IDE file lists and compilers that don't support dependency tracking.

[bgilbert]

Since this is an interface-only library, the files list doesn't actually matter - it's just a hint for IDE file lists and compilers that don't support dependency tracking.

It does matter because those headers are being installed, along with a pkg-config file that other software might use to build with those installed headers.

[mochaaP]

I will add a CI task that installs the library with meson and manually compiles the demos.