Add FREEECAD_USE_CCACHE cmake option

Defaults to ON except for conda compilation on windows

cMake/FreeCAD_Helpers/InitializeFreeCADBuildOptions.cmake

@@ -20,6 +20,11 @@ macro(InitializeFreeCADBuildOptions)
     else()
         option(FREECAD_USE_QT_FILEDIALOG "Use Qt's file dialog instead of the native one." ON)
     endif()
+    if (BUILD_WITH_CONDA AND WIN32)
+        option(FREECAD_USE_CCACHE "Auto detect and use ccache during compilation" OFF)
+    else()
+        option(FREECAD_USE_CCACHE "Auto detect and use ccache during compilation" ON)
+    endif()
 
     # == Win32 is default behaviour use the LibPack copied in Source tree ==========
     if(MSVC)