Add: #600 NGルール (#602)

* Wip

* Wip

* Wip: History

* Wip: テストコード作成

* Fix test

* Wip

* Wip

* Wip

* Fix test

* Wip

* Wip

* Wip

* Wip

* なんとか完成、これから動作確認

* spell miss

* Change ng rule timings

* Fix test

* Wip

* Fix test

* Wip

* Fix form

* 表示まわりの改善

app/helpers/ng_rule_helper.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module NgRuleHelper
+  def check_invalid_status_for_ng_rule!(account, **options)
+    (check_for_ng_rule!(account, **options) { |rule| !rule.check_status_or_record! }).none?
+  end
+
+  def check_invalid_reaction_for_ng_rule!(account, **options)
+    (check_for_ng_rule!(account, **options) { |rule| !rule.check_reaction_or_record! }).none?
+  end
+
+  private
+
+  def check_for_ng_rule!(account, **options, &block)
+    NgRule.cached_rules
+          .map { |raw_rule| Admin::NgRule.new(raw_rule, account, **options) }
+          .filter(&block)
+  end
+
+  def do_account_action_for_rule!(account, action)
+    case action
+    when :silence
+      account.silence!
+    when :suspend
+      account.suspend!
+    end
+  end
+end