Script to build aom av1 source code with Visual Studio 2019.

Windows builds

At this moment we generate x64 and Arm64 builds with VS 2019.

• The last Automated AppVeyor build can be found here.
• The history of all Automated AppVeyor builds can be found here.
• Microsoft Visual C++ Redistributable para Visual Studio 2015, 2017 y 2019

You can do pull requests to improve this script.