Fix MSVC C4819 encoding warnings on Windows with non-English code pages

[Copilot]

On Windows with code page 936 (GBK/Chinese Simplified), MSVC emits C4819 warnings for shader source files (ShaderNode.h, ShaderDataType.h, etc.) because it cannot determine the source encoding without explicit direction.

Changes

• cmake/configuration.cmake: Add /utf-8 to MSVC compile options, instructing MSVC to treat all source files as UTF-8 (source and execution character sets)

if(MSVC)
    cmake_host_system_information(RESULT CPU_NUMBER_OF_LOGICAL_CORES QUERY NUMBER_OF_LOGICAL_CORES)
    add_compile_options($<$<CXX_COMPILER_ID:MSVC>:/MP${CPU_NUMBER_OF_LOGICAL_CORES}>)
    add_compile_options($<$<CXX_COMPILER_ID:MSVC>:/utf-8>)
endif()

This applies globally to all targets, eliminating C4819 warnings without suppressing them via /wd4819.

Original prompt

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ShaderNode.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/TranslationUnit.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ShaderNode.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/RHILayoutGenerator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/BufferLayoutCalculator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ResourceGroupDecl.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/TranslationUnit.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/RHILayoutGenerator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ResourceGroupDecl.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/BufferLayoutCalculator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ResourceDeclGenerator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/ResourceDeclGenerator.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderNode.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/HLSLResourceDeclGen.cpp”)

D:\Code\Engine\SkyEngine\engine\render\shader\include\shader\node\ShaderDataType.h(1,1): warning C4819: 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 [D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\ShaderCompiler.Static.vcxproj]
(编译源文件“../../../../engine/render/shader/src/node/HLSLResourceDeclGen.cpp”)

ShaderCompiler.Static.vcxproj -> D:\Code\Engine\SkyEngine\cmake-build-debug-visual-studio\engine\render\shader\Debug\ShaderCompiler.Static.lib
ShaderLayoutT...

Created from VS Code.

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