ONNX protobuf

This directory contains generated protobuf definition for onnx:

• onnx.js
• onnx.d.ts

These files are generated from a fork of onnx-proto.

The ONNX protobuf uses protobufjs@7.2.4, which depends on long@5.2.3, the version contains 2 bugs:

• type export does not work with commonjs. described in https://github.com/dcodeIO/long.js/pull/124. added a "postinstall" script to fix.
• in the generated typescript declaration file 'onnx.d.ts', the following line:

  import Long = require('long');
  

  need to be replaced to fix type import error:

  import Long from 'long';
  

  this replacement is done and code format is also applied to file 'onnx.d.ts'.