init project

app/models/project_package_apply.rb

@@ -0,0 +1,19 @@
+class ProjectPackageApply < ApplicationRecord
+  include AASM
+
+  belongs_to :project_package
+
+  aasm(:status) do
+    state :pending, initial: true
+    state :refused
+    state :agreed
+
+    event :refuse do
+      transitions from: :pending, to: :refused
+    end
+
+    event :agree do
+      transitions from: :pending, to: :agreed
+    end
+  end
+end