build: add shellapi and timeapi includes to fix visual studio solution

[Giorox]

Description

When trying to build on certain Windows 10 versions through the SLN file from Visual Studio, you will encounter some 'identifier not found' errors.

Behaviour

Actual

When following the compilation tutorial you shouldn't have any issues compiling.

Expected

Errors out on some identifiers in the framework/platform/win32platform.cpp and framework/platform/win32window.cpp files as can be seen above

Fixes

Added #include <timeapi.h> in framework/platform/win32window.cpp.
Added #include <shellapi.h> in framework/platform/win32platform.cpp.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested

Attempted to build as was described in the documentation and got the error. Once the fix is implemented, project compiles successfully

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I checked the PR checks reports
• My changes generate no new warnings