Pass environment through cmake executable resolve

[Gold872]

Fixes issue where cmake executable couldn't be found on windows after parsing VS environment variables

[rainyl]

@Gold872 Thanks for your contribution~

I am wondering why it's necessary to pass env vars explicitly? according to the doc, includeParentEnvironment is true by default and the child process should inherit the parent (the current dart program) env vars, please explain more and paste the error message if possible.

[Gold872]

To preface, this is from my testing on windows where cmake isn't in the path by default

At the start of the build, several environment variables are loaded through visual studio exectuables, which are used to find the cmake executable. The problem is during build, it uses the where command to find cmake, and through the default windows path, this isn't possible, so the extra visual studio environment variables are needed to allow the where command to find cmake.

The full error message I got was extremely long, but essentially it was saying that the cmake executable could not be found by the where command

[rainyl]

Okay, that makes sense, thanks~

I will update the package version to 0.2.3 and merge it.

[rainyl]

Thanks again for your contribution~ 👍