Update registry.json

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: bthos

registry.json

@@ -14,7 +14,13 @@
       "category": "billing",
       "verified": false,
       "downloads": 0,
-      "tags": [],
+      "tags": [
+        "billing",
+        "invoicing",
+        "finance",
+        "payments",
+        "billable-time"
+      ],
       "license": "MIT",
       "min_core_version": "0.3.0",
       "max_core_version": "1.0.0",