Add data and log task columns

migrations/000004_create_task_table.up.sql

@@ -3,6 +3,8 @@ CREATE TABLE IF NOT EXISTS tasks(
    id serial PRIMARY KEY,
    worker_id uuid REFERENCES workers(id),
    file_id integer REFERENCES files(id) NOT NULL,
+   type smallint NOT NULL,
    status smallint NOT NULL,
-   type smallint NOT NULL
+   data JSONB,
+   log text[]
 );