docs: add a central glossary

Signed-off-by: Aramis <sennyeyaramis@gmail.com>

docs/auth/glossary.md

@@ -1,30 +0,0 @@
----
-id: glossary
-title: Glossary
-description: All Glossaries related to auth
----
-
-- **Popup** - A separate browser window opened on top of the previous one.
-- **OAuth** - More specifically OAuth 2.0, a standard protocol for
-  authorization. See [oauth.net/2/](https://oauth.net/2/).
-- **OpenID Connect** - A layer on top of OAuth which standardises
-  authentication. See
-  [en.wikipedia.org/wiki/OpenID_Connect](https://en.wikipedia.org/wiki/OpenID_Connect).
-- **JWT** - JSON Web Token, a popular JSON based token format that is commonly
-  encrypted and/or signed, see
-  [en.wikipedia.org/wiki/JSON_Web_Token](https://en.wikipedia.org/wiki/JSON_Web_Token)
-- **Scope** - A string that describes a certain type of access that can be
-  granted to a user using OAuth.
-- **Access token** - A token that gives access to perform actions on behalf of a
-  user. It will commonly have a short expiry time, and be limited to a set of
-  scopes. Part of the OAuth protocol.
-- **ID token** - A JWT used to prove a user's identity, containing for example
-  the user's email. Part of OpenID Connect.
-- **Offline access** - OAuth flow that results in both a refresh and access
-  token, where the refresh token has a long expiration or never expires, and can
-  be used to request more access tokens in the future. This lets the user go
-  "offline" with respect to the token issuer, but still be able to request more
-  tokens at a later time without further direct interaction for the user.
-- **Code grant** - OAuth flow where the client receives an authorization code
-  that is passed to the backend to be exchanged for an access token and possibly
-  refresh token.