build: set C++ language standard to C++17 in Debug and Release configurations

Adds <LanguageStandard>stdcpp17</LanguageStandard> to both ClCompile sections
to ensure consistent C++17 compilation across build types.

Author: j4y

ColorCop.vcxproj

@@ -72,6 +72,7 @@
       <ObjectFileName>.\Release/</ObjectFileName>
       <ProgramDataBaseFileName>.\Release/</ProgramDataBaseFileName>
       <WarningLevel>Level4</WarningLevel>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -100,6 +101,7 @@
       <ObjectFileName>.\Debug/</ObjectFileName>
       <ProgramDataBaseFileName>.\Debug/</ProgramDataBaseFileName>
       <WarningLevel>Level4</WarningLevel>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>