Add new Shopware 6 role with OIDC/LDAP plugin integration and Docker-based deployment configuration.

Includes:
- New role: web-app-shopware (Docker, MariaDB, Redis, OpenSearch)
- Updated networks and ports configuration
- Automated install, migration, and admin creation
- Optional IAM integration via OIDC/LDAP plugins

Reference: https://chatgpt.com/share/6907b0d4-ab14-800f-b576-62c0d26c8ad1

roles/web-app-shopware/config/main.yml

@@ -0,0 +1,48 @@
+title:                            "{{ SOFTWARE_NAME }} Shop"
+configuration:
+  search:
+    engine:                      "{{ SHOPWARE_SEARCH_ENGINE }}"
+features:
+  central_database:               true
+  redis:                          true
+  ldap:                           true         # via plugin
+  oidc:                           false        # via plugin (Keycloak)
+  logout:                         true
+server:
+  csp:
+    flags: {}
+    whitelist: {}
+  domains:
+    aliases: []
+    canonical:
+      - shop.{{ PRIMARY_DOMAIN }}
+docker:
+  services:
+    database:
+      enabled: true
+    php:
+      image:            "{{ SHOPWARE_PHP_IMAGE }}"
+      version:          "{{ SHOPWARE_VERSION }}"
+      name:             "{{ SHOPWARE_PHP_CONTAINER }}"
+      cpus:             2.0
+      mem_reservation:  2g
+      mem_limit:        4g
+      pids_limit:       2048
+    nginx:
+      image:            "{{ SHOPWARE_NGINX_IMAGE }}"
+      version:          "{{ SHOPWARE_NGINX_VERSION }}"
+      name:             "{{ SHOPWARE_NGINX_CONTAINER }}"
+      port:             8080
+      cpus:             0.5
+      mem_reservation:  256m
+      mem_limit:        512m
+    redis:
+      enabled:            "{{ SHOPWARE_REDIS_ENABLED }}"
+      cpus:               0.25
+      mem_reservation:    256m
+      mem_limit:          512m
+    search:
+      enabled:            "{{ SHOPWARE_SEARCH_ENABLED }}"
+      engine:             "{{ SHOPWARE_SEARCH_ENGINE }}"
+  volumes:
+    data:                   "{{ SHOPWARE_VOLUME }}"