Implement backend API and database services in Docker setup

- Added a new `api` service for the NestJS backend, including health checks and dependencies on PostgreSQL, Redis, and MinIO.
- Introduced PostgreSQL and Redis services with health checks and configurations for data persistence.
- Added MinIO for S3-compatible object storage and a one-shot service to initialize required buckets.
- Updated the Nginx configuration to proxy requests to the new backend API and MinIO storage.
- Enhanced the Dockerfile to support the new API environment variables and configurations.
- Updated the `package.json` and `package-lock.json` to include new dependencies for QR code generation and other utilities.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/.vscode/launch.json

@@ -0,0 +1,29 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Debug Nest Framework",
+      "args": ["${workspaceFolder}/src/main.ts"],
+      "runtimeArgs": [
+        "--nolazy",
+        "-r",
+        "ts-node/register",
+        "-r",
+        "tsconfig-paths/register",
+        "--watch",
+        "--",
+        "--inspect"
+      ],
+      "restart": true,
+      "envFile": "${workspaceFolder}/.env",
+      "cwd": "${workspaceRoot}",
+      "protocol": "inspector",
+      "internalConsoleOptions": "openOnSessionStart",
+      "sourceMaps": true,
+      "console": "internalConsole",
+      "outputCapture": "std"
+    }
+  ]
+}