feat: SDL support for keybind and window handling

[saadndm]

Description

We should prob give this to testers for testing before next release

feat: SDL support for keybind and window handling

• Fixes all keybind/window handling for 26.3, uses shared InputConstants wherever possible
• Tested on 1.8.9 ornithe with lenis

feat(keybind): migrate keybinds to InputConstant names

• Saves keybinds using InputConstants key names instead of GLFW specific ints
• Migrates existing GLFW keyboard and mouse bindings on first load using a GLFW -> SDL table
• Unsupported keys are unbound with a warning:

• Switching back to old OneConfig versions after migrating will reset the config
• Tests: MinecraftKeybindCodecTest and OneConfigKeybindAdapterTest

Checklist

• I made a clear description of what was changed
• I stated why these changes were necessary
• I updated documentation or said what needs to be updated
• I made sure these changes are backwards compatible
• This pull request is for one feature/bug fix