Add change files

Author: stanch

common/changes/@snowplow/browser-tracker-core/feature-extended-activity-tracking_2026-04-06-13-19.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "comment": "Add opt-in extended activity tracking with activity_metrics entity",
+      "type": "none",
+      "packageName": "@snowplow/browser-tracker-core"
+    }
+  ],
+  "packageName": "@snowplow/browser-tracker-core"
+}

common/changes/@snowplow/browser-tracker/feature-extended-activity-tracking_2026-04-06-13-19.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "comment": "Add opt-in extended activity tracking with activity_metrics entity",
+      "type": "none",
+      "packageName": "@snowplow/browser-tracker"
+    }
+  ],
+  "packageName": "@snowplow/browser-tracker"
+}