onnxruntime

1fa6d8fe - support loading external execution provider from python frontend (#7332)

support loading external execution provider from python frontend (#7332) * initial dynamic load example * support load EP in the provider options * support dynamic load EP in orttrainer * split the provider interface; fix comments in pr * remove experiment code * add test * remove useless file * add test model file;fix linux brewak * fix linux build and missing file * fix python build * fix python build * fix python binding * fix python test * fix runtime path for posix env * exclude the shared library from minimal build * fix comments in pr; * seperate the provider shared lib loading * excluded from minimal / macos / ios build * skip copy the provider shared lib for minimal build and mac os * fix macos build * exclude the test for macos build * exclude from andorid build * exclude from web assembly build * enable the invalid ep test Co-authored-by: Cheng Tang <chenta@microsoft.com>