onnxruntime

[JS] onnxruntime-web (#7394)

* add web

* add script and test

* fix lint

* add test/data/ops

* add test/data/node/ to gitignore

* modify scripts

* add onnxjs

* fix tests

* fix test-runner

* fix sourcemap

* fix onnxjs profiling

* update test list

* update README

* resolve comments

* set wasm as default backend

* rename package

* update copyright header

* do not use class "Buffer" in browser context

* revise readme