added Project model with project_name and Task model with title&status

db/migrate/20260126072711_create_projects.rb

@@ -0,0 +1,9 @@
+class CreateProjects < ActiveRecord::Migration[8.1]
+  def change
+    create_table :projects do |t|
+      t.string :project_name
+
+      t.timestamps
+    end
+  end
+end