Add macos support for gamepads

[TymurBondar]

Change the overrides after SDL3 merge (BinghamtonRover/flutter_sdl_gamepad#1)

[Levi-Lesches]

Not your fault, but Windows support just broke. I'll merge this in once the issue is resolved.

Not 100% sure on the cause, but it seems SDL and GitHub are looking into it:

• Missing gameinput.h header while compiling on Windows (Github CI specific) libsdl-org/SDL#11487
• 'gameinput.h': No such file or directory actions/runner-images#10980

If these issues get fixed, I will roll back my 3 commits here (those were to debug the issue)

[Levi-Lesches]

Marking this as a draft until we resolve the Windows issue and new MacOS issue

[Levi-Lesches]

Windows is working! But now there seems to be a new error on the MacOS builds:

#import "Headers/flutter_sdl_gamepad-umbrella.h"
        ^
#import "SDL_egl.h"
        ^
/Users/runner/work/Dashboard/Dashboard/macos/Flutter/ephemeral/.symlinks/plugins/flutter_sdl_gamepad/macos/Frameworks/SDL3.framework/Headers/SDL_egl.h:36:10: error: 'EGL/egl.h' file not found
#include <EGL/egl.h>
         ^
<unknown>:0: error: could not build Objective-C module 'flutter_sdl_gamepad

I'm not sure how or why this is suddenly different than previous builds. Logs show MacOS was working fine back in November, but we only added the SDL3 Framework files in December, so it seems this is GitHub's first time getting to run with SDL? But it looks like this run was using the Git version, which did have SDL support.

I'm confused, so I filed libsdl-org/SDL#12038 to get some help

[Levi-Lesches]

Okay I managed to "fix" it by going back to the last commit in the macos branch, before we merged it in flutter_sdl_gamepad. The only thing that changed since then was this commit, where I simply copied-and-pasted header files from the A folder into the Current folder.

To me, that means that XCode was possibly skipping those files before, and that's why this error is happening now, but I'm not 100% sure.