* Set ARM agent pool
* Set CMake generator to VS 2019 in ARM
* Use system-wide CMake instead of custom version
Our custom version is too old for VS 2019
* Use DML and build shared lib in ARM CI
* Restore nuget packages in ARM CI
* Disable DML
* Refactor ARM debug/release builds
* Use system packaged Python version
* Remove hardcoded Python path
* Downgrade Python to 3.7 for build
* Remove explicit CMake path
