📚 Add animations for login and logout

docs/editor/authentication.md

@@ -1,5 +1,9 @@
 # Authentication
 
+The animation below displays how to login to the *workspace*:
+
+![authentication-login](/editor/authentication-login.gif)
+
 Given that the majority of users will integrate the *workspace* with an external
 authentication provider *(or deploy on a local machine)*, the default deployment is
 configured to not require authentication.
@@ -11,6 +15,8 @@ Remember to click `Sign out` at the bottom of the `File` menu when you are done
 as your login session won't expire automatically.
 :::
 
+![authentication-logout](/editor/authentication-logout.gif)
+
 ## Password Authentication
 
 Passed authentication can be easily configured by setting an environment variable when