* Add iOS test pipeline and a sample app.
* clean up the unused code.
* clean up.
* revert the unknown change
* disable the shared library for iOS.
* add open source notice text.
* ignore the skipped test.
* extract the common ortenv setup
* Enable iOS cross build on MacOS (step#1)
* Changed parallel option
* fixed style issues
* Enable ios arm64 crossbuild on MacOS
* Enable ios arm64 crossbuild on MacOS
* Enable parallel build for xcode
* Fix arm64 function not 4-byte aligned warning
* Rename onnxruntime_ios.cmake to onnxruntime_ios.toolchain.cmake
* change build.py to use the new ios toolchain file name