SPDX standardizes how source code conveys its copyright and licensing information. See https://spdx.github.io/spdx-spec/1-rationale/ . SPDX tags are adopted in many large projects, including things like the Linux kernel.
These parameters only acted as views into the provided strings, so these can just be turned into non-owning string views.
This isn't std::moved wholesale into a member variable or further std::moved into another function, so it's better to take it by const reference here to avoid unnecessary reallocations of contained std::string instances.
UICommon/NetPlayIndex: Fix random segfaults after quitting NetPlay
We can't join a detached thread, so NetPlayIndex gets deleted before the notification thread exits, creating a race condition. We switch to using Common::Event because just sleeping leaves the UI hung on the thread join for a few seconds.