Add phi3 converter #2748

Job	Run time
build-and-push-docker-images	1h 48m 39s
build-and-test-cpp-x86_64 (ubuntu-20.04, mkl)	6m 44s
build-python-wheels (ubuntu-20.04, auto64)	2h 3m 32s
build-and-test-cpp-x86_64 (ubuntu-20.04, dnnl)	5m 30s
build-and-test-cpp-aarch64 (openblas)	4m 13s
build-python-wheels (macos-11, auto64)	39m 41s
build-and-test-cpp-x86_64 (macos-11, mkl)	11m 53s
check-python-style	7s
build-python-wheels (windows-2019, auto64)	5h 41m 42s
build-and-test-cpp-x86_64 (macos-11, dnnl)	11m 29s
build-python-wheels (ubuntu-20.04, aarch64)	1h 14m 30s
build-python-wheels (macos-11, arm64)	12m 53s
build-and-deploy-docs	55s
test-python-wheels (ubuntu-20.04)	11m 20s
test-python-wheels (macos-11)	4m 53s
test-python-wheels (windows-2019)	5m 5s
publish-python-wheels-on-pypi	0s
	12h 43m 6s

Provide feedback