feat: redesign due date manager

migrations/0070_add-task_due_date_notification.up.sql

@@ -0,0 +1,15 @@
+CREATE TABLE task_due_date_reminder_duration (
+  code text PRIMARY KEY
+);
+
+INSERT INTO task_due_date_reminder_duration VALUES ('MINUTE');
+INSERT INTO task_due_date_reminder_duration VALUES ('HOUR');
+INSERT INTO task_due_date_reminder_duration VALUES ('DAY');
+INSERT INTO task_due_date_reminder_duration VALUES ('WEEK');
+
+CREATE TABLE task_due_date_reminder (
+  due_date_reminder_id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+  task_id uuid NOT NULL REFERENCES task(task_id) ON DELETE CASCADE,
+  period int NOT NULL,
+  duration text NOT NULL REFERENCES task_due_date_reminder_duration(code) ON DELETE CASCADE
+);