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/storage/src/config.ts

@@ -0,0 +1,31 @@
+export type StorageConfig = {
+  accessKeyId?: string
+  bucket: string
+  endpoint?: string
+  forcePathStyle: boolean
+  region: string
+  secretAccessKey?: string
+}
+
+export function loadStorageConfigFromEnv(env: NodeJS.ProcessEnv = process.env): StorageConfig {
+  return {
+    accessKeyId: normalizeOptionalString(env.S3_ACCESS_KEY_ID),
+    bucket: env.S3_BUCKET ?? "image-platform",
+    endpoint: normalizeOptionalString(env.S3_ENDPOINT),
+    forcePathStyle: parseBoolean(env.S3_FORCE_PATH_STYLE, true),
+    region: env.S3_REGION ?? "us-east-1",
+    secretAccessKey: normalizeOptionalString(env.S3_SECRET_ACCESS_KEY),
+  }
+}
+
+function normalizeOptionalString(value: string | undefined) {
+  return value && value.trim().length > 0 ? value : undefined
+}
+
+function parseBoolean(value: string | undefined, fallback: boolean) {
+  if (value === undefined) {
+    return fallback
+  }
+
+  return ["1", "true", "yes"].includes(value.toLowerCase())
+}