Add moderation warnings (#9519)

* Add moderation warnings

Replace individual routes for disabling, silencing, and suspending
a user, as well as the report update route, with a unified account
action controller that allows you to select an action (none,
disable, silence, suspend) as well as whether it should generate an
e-mail notification with optional custom text. That notification,
with the optional custom text, is saved as a warning.

Additionally, there are warning presets you can configure to save
time when performing the above.

* Use Account#local_username_and_domain

app/helpers/admin/action_logs_helper.rb

@@ -23,6 +23,8 @@ module Admin::ActionLogsHelper
       link_to record.domain, "https://#{record.domain}"
     when 'Status'
       link_to record.account.acct, TagManager.instance.url_for(record)
+    when 'AccountWarning'
+      link_to record.target_account.acct, admin_account_path(record.target_account_id)
     end
   end
 
@@ -34,6 +36,7 @@ module Admin::ActionLogsHelper
       link_to attributes['domain'], "https://#{attributes['domain']}"
     when 'Status'
       tmp_status = Status.new(attributes.except('reblogs_count', 'favourites_count'))
+
       if tmp_status.account
         link_to tmp_status.account&.acct || "##{tmp_status.account_id}", admin_account_path(tmp_status.account_id)
       else
@@ -81,6 +84,8 @@ module Admin::ActionLogsHelper
       'envelope'
     when 'Status'
       'pencil'
+    when 'AccountWarning'
+      'warning'
     end
   end
 
@@ -104,6 +109,6 @@ module Admin::ActionLogsHelper
   private
 
   def opposite_verbs?(log)
-    %w(DomainBlock EmailDomainBlock).include?(log.target_type)
+    %w(DomainBlock EmailDomainBlock AccountWarning).include?(log.target_type)
   end
 end