[feature/auth-refactor] Create an auth.provider_collector service

Creates an auth.provider_collector service for all auth providers.

PHPBB3-9734

phpBB/config/auth_providers.yml

@@ -1,4 +1,10 @@
 services:
+    auth.provider_collection:
+        class: phpbb_di_service_collection
+        arguments:
+            - @service_container
+        tags:
+            - { name: service_collection, tag: auth.provider }
     auth.provider.db:
         class: phpbb_auth_provider_db
         arguments:
@@ -8,6 +14,8 @@ services:
             - @user
             - %core.root_path%
             - %core.php_ext%
+        tags:
+            - { name: auth.provider }
     auth.provider.apache:
         class: phpbb_auth_provider_apache
         arguments:
@@ -17,9 +25,13 @@ services:
             - @user
             - %core.root_path%
             - %core.php_ext%
+        tags:
+            - { name: auth.provider }
     auth.provider.ldap:
         class: phpbb_auth_provider_ldap
         arguments:
             - @dbal.conn
             - @config
             - @user
+        tags:
+            - { name: auth.provider }