Add: [Win32] GDI engine for font glyph rendering as a replacement for including FreeType.

Building with FreeType is still possible and will take precedence over the GDI renderer, but
the project files don't include FreeType anymore by default. Combining GDI rendering with ICU
text layout is untested.

Codechange: liblzma is called liblzma, how ever strange that might be

It is the only library we use that calls itself with 'lib' in the
name. This might be confusing, but with the arrival of cmake a lot
of these things are automated. And detection will find 'liblzma',
not 'lzma', like with 'lzo', 'zlib', ..

Change: Always build baseset metadata, instead of including it in the repo.

This adds a script and project files to generate these files within MSVC.

Change: use vcpkg integration in Visual Studio

Removes the need for us to provide OpenTTD-useful package

Change: [Win32] Use Uniscribe instead of ICU for text caret handling.

This removes the need for the ICU lib on Windows.

Change: [Win32] Declare in the app manifest that all current Windows versions are natively supported.

The main effect of this is currently a proper OS version in the crashlog.