Add customizable user roles (#18641)

* Add customizable user roles

* Various fixes and improvements

* Add migration for old settings and fix tootctl role management

db/seeds.rb

@@ -1,11 +1,5 @@
-Doorkeeper::Application.create!(name: 'Web', superapp: true, redirect_uri: Doorkeeper.configuration.native_redirect_uri, scopes: 'read write follow push')
+# frozen_string_literal: true
 
-domain = ENV['LOCAL_DOMAIN'] || Rails.configuration.x.local_domain
-account = Account.find_or_initialize_by(id: -99, actor_type: 'Application', locked: true, username: domain)
-account.save!
-
-if Rails.env.development?
-  admin  = Account.where(username: 'admin').first_or_initialize(username: 'admin')
-  admin.save(validate: false)
-  User.where(email: "admin@#{domain}").first_or_initialize(email: "admin@#{domain}", password: 'mastodonadmin', password_confirmation: 'mastodonadmin', confirmed_at: Time.now.utc, admin: true, account: admin, agreement: true, approved: true).save!
+Dir[Rails.root.join('db', 'seeds', '*.rb')].sort.each do |seed|
+  load seed
 end