Defold: Make package_win32_sdk.sh detect the currently installed version of MSVC

[subsoap]

Is your feature request related to a problem? Please describe (REQUIRED):

Currently when installing VS the version may be higher than is mentioned in the docs. Users need to manually modify package_win32_sdk.sh to bump up the version to whatever they have.

Describe the solution you'd like (REQUIRED):
The script should check the /c/Program Files (x86)/Microsoft Visual Studio/2019/Community/ folder for versions and pick the newest one listed there to use.

Describe alternatives you've considered (REQUIRED):
Without this users must edit the .sh themselves.

[subsoap]

build.py hard codes the version number for MSVC too so it should be able to detect the version if any within the packages folder? and pick the latest one from there?

[britzl]

@JCash please provide some input!

[subsoap]

It's not a huge priority but it does require people to know to edit the .py files to set the correct version numbers.

Because currently build.py assumes to be downloading this file from a HTTP server it can't just see the files in a directory and pick the proper/latest one.

[britzl]

It would be a nice modification to build.py to check if --package-path is a URL or a file location and take appropriate action.

[JCash]

Yes, @subsoap and I discussed this feature, and while _we_ previously only needed to update this script very rarely, the actual install of MSVS is a moving target, and this feature would help newcomers settling in.

And yes, the "--package-path" fix would be another beneficial fix.