Load SDL3 when using SDL_image or SDL_ttf

[smoogipoo]

Startup fails because the native SDL3 lib isn't loaded:

dlopen(/Users/smgi/Desktop/SDLImageTest/SDLImageTest/bin/Debug/net8.0/runtimes/osx-arm64/native/libSDL3_ttf.dylib, 0x0001): Library not loaded: @rpath/libSDL3.0.dylib
  Referenced from: <86C0A333-AD6F-3D99-8F4E-186F20B256BE> /Users/smgi/Desktop/SDLImageTest/SDLImageTest/bin/Debug/net8.0/runtimes/osx-arm64/native/libSDL3_ttf.dylib
  Reason: no LC_RPATH's found

Calling SDL3.SDL_Init(0) fixes this and relies on the .NET library resolution mechanism.

[WizzardMaker]

I would caution against using the ModuleInitializer to load other libraries as a library.
Depending on the environment (various Windows versions) this can lead to potentially lock up the application due to the LoadLibrary loader lock

What would be the scenario in which SDL helper libraries were to be executed before SDL? Afaik SDL needs to be initialized before calling any function on helper libraries anyway

Could this be solved by a static constructor for these classes instead?

public static unsafe partial class SDL3_ttf {
    static SDL3_ttf() {
        SDL3.SDL_Init(0);
    }
}

[smoogipoo]

I came up with this PR because I was looking at examples, but I must have missed the SDL_Init() call because...

Afaik SDL needs to be initialized before calling any function on helper libraries anyway

This does appear to be the case indeed. Will close this for now then :)

I would caution against using the ModuleInitializer to load other libraries as a library.

Good call, I'll be keeping this one in mind.