feat(web-app-drupal): add Drupal role, OIDC config, and wiring

- networks: add web-app-drupal subnet 192.168.104.80/28
- ports: map localhost http port 8060
- add role files: tasks, vars, schema, users, templates (Dockerfile, docker-compose, settings.local.php, upload.ini)
- add docs: README.md and Administration.md

Ref: https://chatgpt.com/share/690535c5-b55c-800f-8556-5335a6b8a33f

group_vars/all/09_networks.yml

@@ -114,6 +114,8 @@ defaults_networks:
       subnet: 192.168.104.48/28
     web-app-mini-qr:
       subnet: 192.168.104.64/28
+    web-app-drupal:
+      subnet: 192.168.104.80/28
 
     # /24 Networks / 254 Usable Clients
     web-app-bigbluebutton:

group_vars/all/10_ports.yml

@@ -81,6 +81,7 @@ ports:
       web-app-minio_api: 8057
       web-app-minio_console: 8058
       web-app-mini-qr: 8059
+      web-app-drupal: 8060
       web-app-bigbluebutton: 48087    # This port is predefined by bbb. @todo Try to change this to a 8XXX port
   public:
     # The following ports should be changed to 22 on the subdomain via stream mapping