feat(support): add select_input_base

Author: difernandez

lib/activeadmin_addons/support/select_input_base.rb

@@ -0,0 +1,11 @@
+require_relative "input_helpers/input_options_handler"
+require_relative "input_helpers/input_methods"
+require_relative "input_helpers/input_html_helpers"
+
+module ActiveAdminAddons
+  class SelectInputBase < Formtastic::Inputs::SelectInput
+    include InputOptionsHandler
+    include InputMethods
+    include InputHtmlHelpers
+  end
+end