Hey, have you ever heard of OnePlus? Well, okay, the typical Macworld reader probably has, because they tend to be into tech more than most people. But in the general Apple community, it wouldn’t be surprising that a majority have not heard of the Android phone and accessory maker. But we all might be hearing a little more about them soon. That’s because OnePlus is collaborating with Keychron on a mechanical keyboard for the Mac. Not of those annoying “Mac-compatible” keyboards that have a Windows key layout and Mac-compatible software drivers. According to OnePlus, this keyboard “is designed …