fpm-auth: Google OAuth Integration

[AbrarNitk]

Status: Pending

Follow: #585

Author: Wasif

Code PR: Pending
Doc PR: Pending

Google Integration

We are integrating with Google, so users will be able to login in using Google OAuth. We are going to provide user-identities based on google resources and scopes.

For example, we have an identity google-domain: fifthtry.com, so if we use this identity with some group in fpm.sitemap, so only people with the domain fifthtry.com will be able to read the page.

-- fpm.user-group: fifthtry-people
domain: fifthtry.com

-- fpm.sitemap:

# Home: /

## FifthTry Discussion: /fifthtry-google/
readers: fifthtry-people

Google OAuth Consent Screen https://console.cloud.google.com/apis/credentials/consent
Google Create Credentials https://console.cloud.google.com/apis/credentials
Google OAuth Scopes https://developers.google.com/identity/protocols/oauth2/scopes

Google Identities

1. domain: fifthry.com
2. goole-doc: can-read/can-write:<document-id>
3. google-sheet: can-read/can-write:document-id

Google API to check permission of a file

https://developers.google.com/drive/api/v2/reference/permissions/get#auth

[wasif1024]

Sure. I have changes Telegram integration as suggested by @amitu . From tomorrow i will finalize it and then will start on Google