feat: добавить базовые сервисы image-platform

- добавлены backend, admin, gateway и worker skeleton
- добавлены Drizzle schema, database package и initial migration
- добавлены shared packages для RabbitMQ topology и S3 helpers
- обновлены dev-инфраструктура, env example, scripts и dependencies
- обновлена документация под versioned image URLs и read-through flow

packages/database/drizzle.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from "drizzle-kit"
+
+export default defineConfig({
+  dbCredentials: {
+    url: process.env.DATABASE_URL ?? "postgres://image:image-password@localhost:5433/image_platform",
+  },
+  dialect: "postgresql",
+  out: "./drizzle",
+  schema: "./src/schema.ts",
+  strict: true,
+  verbose: true,
+})