[TODO] Extend Rocket.Chat Auth for Google Auth to support Github Auth

[Sing-Li]

Using the existing "Rocket.Chat Auth for Google Auth Component" as a framework, add support for the following Rocket.Chat auths:

• Github
• Simple email

The existing component should be extended, instead of new components created -- since they're all Rocket.Chat auths.

(it may be a good idea to keep each supported auth as a sub-component/plugin of the auth - hence using it as a framework)

[Nabhag8848]

Hey @Sing-Li, i would like to work on this issue can you assign it to me. I will start right away😄

[Dnouv]

Hey @Nabhag8848

Thank you for taking up the issue. However, you would have to implement this in RC4Conferences first and then backport it to RC4Community; RC4Conferences can be considered as a beta testing ground for the new components.
And please do explain the approach you will be taking for this issue on RocketChat/RC4Conferences#42 this can in a way be good for refining your solution by the community.

If you have any doubts, please feel free to ask them right away. Thank you!