Set up infrastructure for wingetcreate

[ldennington]

Overview

This change sets up the infrastructure for VFS for Git to support deployments to microsoft/winget-pkgs via wingetcreate. Specifically:

1. We update the VFS for Git inno installer metadata to be correct/compatible with wingetcreate
2. We update the release-winget workflow to run on Windows Server instead of Ubuntu (required since wingetcreate is a Windows executable).

I also added quotes to appropriate paths to support spaces when compiling.

Testing

I tested this change with the following steps:

1. Build a local copy of the installer
2. Publish the locally-built copy as a faux pre-release
3. Run wingetcreate new against the faux pre-release
4. Verify generated manifests align with specifications in #700

Associated work items

#699
#700

[derrickstolee]

I'm glad you did this work while it was fresh in your mind. Let's hope we never need to use it. ;)