Fix ARM64 build + Add NuGet pipeline including ARM binaries (#1335)
* Add arm64 nocontribops pipeline
* minor fix
* Added new template for arm build -- disable all tests
* fix build command
* add arm64 flag for msbuild
* add arm leg as upstream dependency
* update platform to arm64 for msbuild
* remove test task from arm build
* remove ESRP signing of C# dlls in arm build
* Updated to work for both --arm and --arm64
* Make the cross compiling cmake flags symmetric
* Add dynamic check for /Wno-error flag, instead of extra build option
* remove extra full-stop