Having conditional statements with CMAKE_BUILD_TYPE is an antipattern
See https://stackoverflow.com/questions/66079007/having-conditional-statements-on-build-type-variable-a-good-design
We use both single- and multi-config generators (Ninja and VS), so we
can't really rely on CMAKE_BUILD_TYPE, because it's not always set.
This commit alters some conditional flags to use <$CONFIG:...>
generator expression, but is still not complete. Also, our default
optimization level (4) now has what was always a de-facto flags
* Remove unused cmake modules - Both are unedited versions of modules provided by cmake itself
* Remove Compiler/GNU.cmake - Only chang was various _INIT flags, which are handled
via CMAKE_USER_MAKE_RULES_OVERRIDE instead
* Remove Platform/Windows.cmake - There's no clear explination for this file being in reactos
and is simply an old version of the one in cmake
* Remove Platform/Windows-MSVC.cmake - _INIT variable changes moved to overrides-msvc.cmake
Remove /implib from link commands
* Remove CMakeDetermineASMCompiler.cmake - Only change from 3.2 is the addition of a compiler list for the generic ASM dialect, but toolchain files explicitly set a compiler so the list is never used
