Add option to reduce motion (#5393)

* Add option to reduce motion

* Use HOC to wrap all Motion calls

* fix case-sensitive issue

* Avoid updating too frequently

* Get rid of unnecessary change to _simple_status.html.haml

app/models/user.rb

@@ -102,6 +102,10 @@ class User < ApplicationRecord
     settings.auto_play_gif
   end
 
+  def setting_reduce_motion
+    settings.reduce_motion
+  end
+
   def setting_system_font_ui
     settings.system_font_ui
   end