Linux64 Part 2

[RyeMutt]

Description

• Modernizes OpenGL initialization to properly support SDL3 and Wayland
  • Removes dependency on glh-linear package
• Removes all remaining OpenGL deprecation to fix Core profile on Linux
• Fixes invalid glLineWidth calls crashing under some GL core drivers
• Updates GL extensions package
• Adds support for building with clang on Linux
• Fixes spacenav/joystick/gamepad input support for sdl3
• Changes Anisotropic Filtering option to a dropdown for better performance tuning
• Fixes broken mutex lock on skinned mesh map
• Fixes disk cache purge threading handing shutdown during long running operations
• Fixes texture cache performing many small io reads during startup
• Fixes various small tracy integration issues and introduces tracy log message capture
• Fix cef scaling on hidpi wayland displays and cef wayland support

Related Issues

Issue Link: #1149

Checklist

Please ensure the following before requesting review:

• I have provided a clear title and detailed description for this pull request.
• If useful, I have included media such as screenshots and video to show off my changes.
• The PR is linked to a relevant issue with sufficient context.
• I have tested the changes locally and verified they work as intended.
• All new and existing tests pass.
• Code follows the project's style guidelines.
• Documentation has been updated if needed.
• Any dependent changes have been merged and published in downstream modules
• I have reviewed the contributing guidelines.

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Additional Notes

[Geenz]

I did a bit of a pre-review on this one - most of this is GL cleanup to help ease things in with SDL3 and just overall getting things into a happier state with regards to state management and other bits. Will re-review when @RyeMutt gives me the thumbs up to do so.