FEATURE: Add user tips for post and topic features (#18964)

* DEV: Add utility to hide all user tips

* DEV: Add UserTip Glimmer component

* DEV: Add tests for existing user tips

* FEATURE: Add user tip for post menu

* FEATURE: Add user tip for topic notification level

* FEATURE: Add user tip for suggested topics

* FEATURE: Hide new popups for existing users

db/migrate/20221114215902_hide_user_tips_3_to_5_for_existing_users.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class HideUserTips3To5ForExistingUsers < ActiveRecord::Migration[7.0]
+  def up
+    execute "UPDATE user_options SET seen_popups = seen_popups || '{3, 4, 5}'"
+  end
+
+  def down
+    execute "UPDATE user_options SET seen_popups = array_remove(array_remove(array_remove(seen_popups, 3), 4), 5)"
+  end
+end