[3.0] Update SDL and ClangSharp

[Exanite]

Summary of the PR

This PR updates ClangSharp and SDL. This was originally part of #2567, but proved to be a more involved change than anticipated due to SDL build problems.

Related issues, Discord discussions, or proposals

This will fix#2402
This PR should also be closed since this PR effectively supersedes it: #2433

Further Comments

Tasks

• Update ClangSharp
  • Update SDL to fix issue related to updating Clangsharp
    • Issue in question: SDL_endian.h error: definition of builtin function '_m_prefetch' libsdl-org/SDL#13952
• Fix broken SDL builds and missing features
  • Fix [3.0] SDL3 is not compiled with X11 #2402
• Rebuild SDL
  • Confirm SDL X11 works on Linux x64
  • Confirm SDL Wayland works on Linux x64
  • Confirm SDL works on Windows x64
• Rebuild the other native binaries as well to verify that I didn't break their builds during this
  • Note to self: If it does break, sanity check first by running the build on a new branch from develop/3.0
• Use Docker approach used by OpenAL for SDL Linux builds
• Consider copying native binaries to example project output folders. Currently the projects use system binaries, which kinda works on Linux and I'm guessing also Mac.
  • The way to do this is explained at the bottom of the linked section: https://dotnet.github.io/Silk.NET/docs/v3/for-contributors/build-system#native-packaging
  • Decide on what to do with the OpenAL example
  • Decision: I made a separate issue and PR here: [3.0] OpenAL library names and example projects #2572, [3.0] Fix OpenAL loading on Windows and make the examples run out-of-the-box #2573

After merging:

• Close the SDL X11 issue
• Close the old SDL update PR

Native builds

(Currently disabling this command by adding a space; the builds are already committed so there's no reason to run them again)
/ build-native SDL OpenAL-Soft

[github-actions]

File	Coverage
All files	16%	✅

Minimum allowed coverage is 0%

Generated by 🐒 cobertura-action against ad14c0e

[github-actions]

All native library builds modified in this PR shall attempt to be built by CI.

[github-actions]

Some of the native library builds modified in this PR were not referenced in the PR description. Please ensure that the PR description contains /build-native OpenAL-Soft SDL. These libraries won't be rebuilt without this being specified. If you believe this is in error, then please write a comment explaining why and ignore this suggestion. This comment will be automatically updated if rectified.

[Exanite]

Self code review completed for the new changes I added.
Should be ready for review and merging now.