added trade-hub role and files

roles/trade_hub/meta/main.yml

@@ -0,0 +1,16 @@
+---
+galaxy_info:
+  role_name: trade_hub
+  author: boxswapper
+  description: Deploy the Free People of the Verse trade hub (FastAPI, nginx, PostgreSQL) with Podman.
+  license: MIT
+  min_ansible_version: "2.15"
+  platforms:
+    - name: GenericLinux
+      versions:
+        - all
+  galaxy_tags:
+    - podman
+    - fastapi
+    - postgresql
+dependencies: []