[Java] Initial Apple Silicon support (#5891)
* Rearranging checks in onnxruntime_mlas.cmake to pickup Apple Silicon.
On an M1 Macbook Pro clang reports:
$ clang -dumpmachine
arm64-apple-darwin20.1.0
So the regex check needs to look for "arm64" first, as otherwise it
matches 32-bit ARM and you get NEON compilation failures.
* Adding Java side library loading support for Apple Silicon (and other aarch64 architectures).
* Adding Qgemm fix from @tracysh
* Fixes the java packaging on Windows.
* Missed a check in the java platform detector.
