Update or replace node-gyp

[mcandre]

node-gyp still has issues with Python 3 support. Please patch node-gyp or select a more modern build system for native dependencies.

Alternatives:

• https://www.npmjs.com/package/cmake-js
• https://www.npmjs.com/package/make-js
• Premake https://premake.github.io/
• B2 https://boostorg.github.io/build/
• SCons https://scons.org/
• Autotools
• Using pure Node.js dependencies

As a reminder, Python 2.x end of life for major security patches is planned for 1st January 2020.

https://www.anaconda.com/end-of-life-eol-for-python-2-7-is-coming-are-you-ready/