Add new model for suggestion form

app/models/suggestion.rb

+# == Schema Information
+#
+# Table name: suggestions
+#
+#  id                     :integer          not null, primary key
+#  name                   :string
+#  link                   :string
+#  description            :text
+#  status                 :integer
+#
+class Suggestion < ApplicationRecord
+  enum status: { new: 0, accepted: 1, rejected: 2, loaded: 3 }
+end