Task status model + default task status generation

app/models/task_status.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class TaskStatus < ApplicationRecord
+  belongs_to :project
+
+  enum :category, { backlog: 100, analysis: 1000, development: 20_000, fulfillment: 60_000 }
+
+  validates :name, presence: true, uniqueness: { scope: :project }
+  validates :category, presence: true
+end