Ember - donation system, bans, loading screen & landing/index page

1. Implemented automatic polling for new store package purchases & bans
2. Added /sync chat command for syncing roles & package purchases manually
3. Added an option to choose servers to sync each role on
4. Fixed default config.php indentation (no new options were added)

Files modified:

1. lua/ember/lua/autorun/client/ember.lua
2. lua/ember/lua/ember/init.lua
3. lua/ember/lua/ember/store.lua
4. lua/ember/lua/ember_config.lua
5. web/app/Controllers/AdminController.php
6. web/app/Controllers/MigrationController.php
7. web/app/Controllers/PagesController.php
8. web/app/Controllers/ServerApiController.php
9. web/app/Models/Role.php
10. web/app/Models/RoleSyncExcludedServer.php
11. web/app/Models/User.php
12. web/app/routes.php
13. web/config.php
14. web/public/js/app.js
15. web/public/mix-manifest.json
16. web/resources/js/components/RoleManager.vue
17. web/resources/views/admin/roles.twig