add worknote created time

db/migrations/20250324195310_worknote_update.sql

@@ -0,0 +1,9 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE worknotes ADD COLUMN created_at DATETIME DEFAULT CURRENT_TIMESTAMP;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE worknotes DROP COLUMN created_at;
+-- +goose StatementEnd