run-cmake should use the value of inheritEnvironments provided in CMakeSettings.json

[lukka]

e.g. if this is provided

```"inheritEnvironments": [ "msvc_x64_x64" ]````

then the x64_x64 cmd prompt should be used to establish the environment for MSVC.

Only on Windows and if related to MSVC the task should be using the inheritEnvironments value if provided.