[hw-4] add postgres db

loms/db/migrations/00003_add_stocks.sql

@@ -0,0 +1,24 @@
+-- +goose Up
+INSERT INTO
+  stocks (sku, total_count, reserved)
+VALUES
+  (139275865, 65534, 0),
+  (2956315, 100, 30),
+  (1076963, 100, 35),
+  (135717466, 100, 20),
+  (135937324, 100, 30),
+  (1625903, 10000, 0),
+  (1148162, 100, 0);
+
+-- +goose Down
+DELETE FROM stocks
+WHERE
+  sku IN (
+    139275865,
+    2956315,
+    1076963,
+    135717466,
+    135937324,
+    1625903,
+    1148162
+  );