[Issue 20005] VC++ can exists in separate BuildTools folder (not only in Community\Enterprise)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20005

--- Comment #2 from KnightMare <black80 at bk.ru> ---
to 2nd:
when VD refs to some concrete SDK and on some running of VS (check at startup)
can see that this SDK does not exists then VD can select latest SDK
automatically

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