Add photos

db/drafts/202204300700_additional_items_and_discounts.sql

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+CREATE TABLE coupons (
+    id                serial  not null primary key,
+    "name" varchar not null,
+    "code" varchar not null,
+    "value" int not null default 0
+);
+
+create table additional_products (
+    id                serial  not null primary key,
+    parent_product_id int references products (id) not null,
+    free_product_id int references products (id) not null
+);
+
+create table addtional_items (
+    id                serial  not null primary key,
+    parent_product_id int references products (id) not null,
+    "name" varchar not null
+);

db/migrate/202204300704_photos.sql

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+CREATE TABLE photos (
+    id                serial  not null primary key,
+    "local_path" varchar not null unique,
+    "hashed_path" varchar not null unique
+);
+
+create table product_photos (
+    id                serial  not null primary key,
+    product_id int references products (id) not null,
+    photo_id int references photos (id) not null
+);