oAuth2 Client - added options for oauth2 client section (#56)

This option set controls the provisioning options for users accessing the service via oAuth2
https://forgejo.org/docs/latest/admin/config-cheat-sheet/#oauth2-client-oauth2_client

Reviewed-on: #56
Reviewed-by: meaz <meaz@no-reply@disroot.org>

defaults/main.yml

@@ -31,6 +31,12 @@ forgejo_base_config:
 forgejo_oauth2_config:
   - 'JWT_SECRET = ' #41 random chars
 
+forgejo_oauth2_client_config:
+  - 'ENABLE_AUTO_REGISTRATION = false'
+  - 'REGISTER_EMAIL_CONFIRM = false'
+  - 'ACCOUNT_LINKING = login'
+  - 'UPDATE_AVATAR = false'
+
 forgejo_ui_config:
   - 'THEMES = gitea-auto,gitea-light,gitea-dark,forgejo-auto,forgejo-light,forgejo-dark' # add only the default ones, not themes ones
   - 'DEFAULT_THEME = gitea-dark'

templates/etc/forgejo/app.ini.j2

@@ -8,6 +8,11 @@
 {{ item }}
 {% endfor %}
 
+[oauth2_client]
+{% for item in forgejo_oauth2_client_config %}
+{{ item }}
+{% endfor %}
+
 [ui]
 {% for item in forgejo_ui_config %}
 {{ item }}
@@ -65,7 +70,6 @@
 {{ item }}
 {% endfor %}
 
-
 [session]
 {% for item in forgejo_session_config %}
 {{ item }}