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

apps/worker/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "@image-platform/worker",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "build": "tsc -p tsconfig.build.json",
+    "dev": "tsx watch src/main.ts",
+    "start": "node dist/main.js",
+    "typecheck": "tsc --noEmit -p tsconfig.json"
+  },
+  "dependencies": {
+    "@image-platform/database": "workspace:*",
+    "@image-platform/queue": "workspace:*",
+    "@image-platform/storage": "workspace:*",
+    "amqplib": "^1.0.4"
+  },
+  "devDependencies": {
+    "@types/amqplib": "^0.10.8",
+    "@types/node": "^25.6.0",
+    "tsx": "^4.21.0",
+    "typescript": "^6.0.3"
+  }
+}