add models for Project, Task, Note, Category

app/models/task.rb

@@ -0,0 +1,9 @@
+class Task < ApplicationRecord
+  belongs_to :creator, class_name: 'User'
+  belongs_to :reporter, class_name: 'User', optional: true
+  belongs_to :reportee, class_name: 'User', optional: true
+  belongs_to :project
+  enum priority: { low: 0, medium: 1, high: 2 }
+  enum status: { open: 0, in_progress: 1, closed: 2 }
+  enum type: { bug: 0, feature: 1, chore: 2 }
+end