Add todos table migration

migrations/001_create_todos.sql

@@ -0,0 +1,10 @@
+create table if not exists public.todos (
+  id           bigserial primary key,
+  user_id      uuid        not null,
+  title        text        not null check (length(title) between 1 and 500),
+  completed    boolean     not null default false,
+  created_at   timestamptz not null default now()
+);
+
+create index if not exists todos_user_id_created_at_idx
+  on public.todos (user_id, created_at desc);