Closes #4293; Autolinker: Use npm module and convert from CoffeeScript

packages/rocketchat-autolinker/.npm/package/.gitignore

packages/rocketchat-autolinker/.npm/package/README

...es/rocketchat-autolinker/.npm/package/npm-shrinkwrap.json

packages/rocketchat-autolinker/client.coffee

packages/rocketchat-autolinker/client.js

packages/rocketchat-autolinker/lib/Autolinker.min.js

packages/rocketchat-autolinker/package.js

packages/rocketchat-autolinker/settings.coffee

packages/rocketchat-autolinker/settings.js