Add group account support

app/services/group_reblog_service.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class GroupReblogService < BaseService
+
+  def call(status)
+    visibility = status.visibility.to_sym
+    return nil if visibility != :public && visibility != :public_unlisted && visibility != :unlisted
+
+    accounts = status.mentions.map(&:account) | status.active_mentions.map(&:account)
+
+    accounts.each do |account|
+      next unless account.local?
+      next if account.group_message_following_only && !account.following?(status.account)
+
+      ReblogService.new.call(account, status, { visibility: status.visibility }) if account.group?
+    end
+  end
+end