Code cannot handle relative project setups.

[smaudet]

Describe the bug
Custom setups where vcxproj files are in a separate directory to the source code are not properly supported. Requires a lot of manual retargeting as the code makes a bunch of invalid assumptions about where these two live relative to one another.

To Reproduce
Make a VCXPROJ with sources, includes, libs, in a separate directory relative to project root.

Expected behavior
Produces a valid CMakeLists.txt

Additional context
Additionally there is a large amount of junk or overkill pathing, the pathing code in general could be dramatically overhauled and probably most of it deleted.

[pavelliavonau]

My case of splitted code works fine. Provide sample of solution to reproduce.