Update and audit existing project dependencies for Symfony/Flex.

- Converted all non-flex bundles with available bundles into Symfony/Flex.
- Updated namespaces to more closely match Symfony.
- Removed unnecessary dependencies and recipes.
- Executed Symfony/Flex recipes to create default configs.
- Improved composer.json scripts.

config/packages/security.yaml

@@ -1,22 +1,10 @@
 security:
-    # https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers
-    providers:
-        in_memory: { memory: null }
-    firewalls:
-        dev:
-            pattern: ^/(_(profiler|wdt)|css|images|js)/
-            security: false
-        main:
-            anonymous: lazy
-
-            # activate different ways to authenticate
-            # https://symfony.com/doc/current/security.html#firewalls-authentication
-
-            # https://symfony.com/doc/current/security/impersonating_user.html
-            # switch_user: true
-
-    # Easy way to control access for large sections of your site
-    # Note: Only the *first* access control that matches will be used
-    access_control:
-        # - { path: ^/admin, roles: ROLE_ADMIN }
-        # - { path: ^/profile, roles: ROLE_USER }
+  providers:
+    in_memory: { memory: null }
+  firewalls:
+    dev:
+      pattern: ^/(_(profiler|wdt)|css|images|js)/
+      security: false
+    main:
+      anonymous: lazy
+  access_control: