@feathersjs/authentication-oauth

[daffl]

This pull request adds a replacement for the @feathersjs/authentication-oauth1 and @feathersjs/authentication-oauth2 packages. It uses Grant, an oAuth middleware module for Express, Koa and Hapi and grant-profile.

@feathersjs/authentication-oauth supports:

• Over 180 oAuth 1 and 2 providers without additional configuration other than adding the key and secret in the configuration
• Account linking
• A customizable oAuth Strategy that can be used through the browser and with existing oAuth tokens (e.g. obtained through mobile SDKs)
• Cookie less cross-domain redirects for easier separation between frontend and backend