Preserve vcxproj, sln, and PowerShell build scripts that were
removed during the upstream CMake migration merge, so this branch
retains a working Visual Studio build configuration.
* Move to cmake
* Move sources to source_groups and ditch more old VS files
* Add BuildVer.h generation
* Break out cmake source lists to platforms
* Don't copy swf files
* Revert audio changes from merge
* Add platform defines
* Match MSBuild flags
* Move BuildVer.h to common include and fix rebuild issue
* Seperate projects properly
* Exclude more files and make sure GameHDD exists
* Missing line
* Remove remaining VS project files
* Update readme and actions
* Use incremental LTCG
* Update workflows
* Update build workflows and output folder
* Disable vcpkg checks
* Force MSVC
* Use precompiled headers
* Only use PCH for cpp
* Exclude compat_shims from PCH
* Handle per-platform source includes
* Copy only current platform media
* Define Iggy libs per platform
* Fix EnsureGameHDD check
* Only set WIN32_EXECUTABLE on Windows
* Correct Iggy libs path
* Remove include of terrain_MipmapLevel
* Correct path to xsb/xwb
* Implement copilot suggestions
* Add clang flags (untested)
* Fix robocopy error checking
* Update documentation
* Drop CMakePresets.json version as we dont use v6 features
* Always cleanup artifacts in nightly even if some builds fail
* Re-work compiler target options
* Move newer iggy dll into redist and cleanup
* Fix typos
* Remove 'Source Files' from all source groups
* Remove old ps1 build scripts
