Introduce minimal VG-Core module registry

src/background.js

@@ -1,5 +1,13 @@
 console.log("VendorGet-IV background loaded");
 
+globalThis.VGCoreModuleRegistry.registerModule({
+  id: "vg-iv",
+  name: "VG-IV",
+  description: "Consent, TCF, GVL and evidence observation module",
+  kind: "evidence",
+  status: "active",
+});
+
 const OFFICIAL_IAB_GVL_URL =
   "https://vendor-list.consensu.org/v3/vendor-list.json";
 const EVIDENCE_RECORDING_SOURCE = "vendorget_background_mirror";