Native text drawing on macOS/iOS

[hrydgard]

Will fix problems with languages rendering as ????? caused by our font atlas not supporting that set of characters.

Helvetica doesn't quite feel right though... Gonna have to pick another of the shipped-with-the-OS fonts maybe.

[hrydgard]

Haven't figured out how to load our TTF and make it prioritized, but the Apple default fonts look pretty good anyway, once I artificially boosted the font size a little.

Might later try to get the TTF loaded, but at least this fixes all problems with missing letters and so forth.

[Merucza-25]

#2 pc 00000000008675f8 arm64/libppsspp_jni.so (HandleAssert(char const*, char const*, int, char const*, char const*, ...)+344) (BuildId: e2a665cce99374cec395cfef5394541ea8505f76)
#3 pc 00000000008398cc arm64/libppsspp_jni.so (VulkanRenderManager::BeginFrame(bool, bool)+280) (BuildId: e2a665cce99374cec395cfef5394541ea8505f76)
#4 pc 0000000000dd18b0 arm64/libppsspp_jni.so (Draw::VKContext::BeginFrame(Draw::DebugFlags)+32) (BuildId: e2a665cce99374cec395cfef5394541ea8505f76)
#5 pc 00000000008851b0 arm64/libppsspp_jni.so (NativeFrame(GraphicsContext*)+748) (BuildId: e2a665cce99374cec395cfef5394541ea8505f76)

[hrydgard]

@Merucza-25 That's an Android log, that's not what this issue is about. Post a new issue please if you have a reproducible crash.