Add meson ci in github repo

I added a basic ci in github clone repo that can help other users to build and test vlc code.

I disable most of the option just to see if it works and compile. It looks like this: https://github.com/talregev/vlc/pull/1 https://github.com/talregev/vlc/actions/runs/13144716457/job/36680067618?pr=1

I couldn't disable all the options, because there is a bug in meson.build files. All 4 option here, when you disable them, meson complain that it missing some parameter.

mad=enabled
mpc=enabled
nvdec=enabled
decklink=enabled