fix crash on macos on network interface change

[WesselVS]

When set_option is called on an unavailable socket, a crash occurs (at least on MacOS). I reproduce this by creating a local outlet, run the GetAllStreams example and unplugging my wire.

[mediashock]

Hey, which version are you using? do you happen to have the compiled library for osx ARM anywhere?

[WesselVS]

Hey, which version are you using? do you happen to have the compiled library for osx ARM anywhere?

https://github.com/WesselVS/liblsl/releases/tag/fix_release

[zeyus]

@WesselVS this crash happens on all platforms I've tried. This includes if I spin up a VM or switch Wifi networks, the app will crash, so this seems invaluable to have

[zeyus]

@WesselVS I forgot about your PR but I have added (complementary) functionality in a new PR #259

I think there is also a larger discussion to be had around interface management, this is not a concern hopefully in most lab environments, but if you add mobile devices into the mix suddenly it can become a problem.

Some issues can be avoided, e.g. if you are using LSL on a laptop, and it has flaky wifi, you can run the experiment over Ethernet, and only bind LSL to the eth interface.

It could be nice to deal with exceptions / interface changes nicely, either with trying to rebind based on the config (with some graceful timeout / check interval) and/or an exposed rebind API method that could be called when required, as long as the app doesn't crash when a change occurs.