* Start converting SDL2 backend to SDL3.
Game starts, but a lot of stuff is broken. Oh well.
* Fix text input
SDL3 changed the API somewhat, for the better. Changes all over UI/Clyde/SDL3 layer.
* Fix mouse buttons being broken
* Remove records from SDL3 WSI
The fact that this shaved 2-3% off Robust.Client.dll is mindboggling. Records are so bad.
* Set Windows/X11 native window properties
* Fix window resize events getting wrong size
oops
* Remove "using static" from SDL3 WSI
Seriously seems to hurt IDE performance, oh well.
* Apparently I never called CheckThreadApartment().
* Add STAThreadAttribute to sandbox
Necessary for content start
* Set window title on creation properly.
* Load window icons
* Fix GLFW NoTitleBar style handling
Yeah this PR is supposed to be about SDL3, so what?
* Implement more window creation settings in SDL3
Mostly the ones that need a lot of platform-specific stuff to work.
* Make fullscreen work properly in SDL3.
* File dialogs with SDL3
Removes need for swnfd.
* Fix some TODOs
* Fix WebView build
* Removed the Interfaces folder.
* All objects inside the GameObjects subfolders are now in the GameObjects namespace.
* Added a Resharper DotSettings file to mark the GameObjects subfolders as not providing namespaces.
* Simplified Robust.client.Graphics namespace.
* Automated remove redundant using statements.
PJB3005