feat: Add analytics module with Mixpanel integration

aider/analytics.py

@@ -0,0 +1,27 @@
+import uuid
+from pathlib import Path
+import json
+from mixpanel import Mixpanel
+
+class Analytics:
+    def __init__(self, project_token=None):
+        self.mp = Mixpanel(project_token) if project_token else None
+        self.user_id = self.get_or_create_uuid()
+
+    def get_or_create_uuid(self):
+        uuid_file = Path.home() / ".aider" / "caches" / "mixpanel-uuid.json"
+        uuid_file.parent.mkdir(parents=True, exist_ok=True)
+
+        if uuid_file.exists():
+            with open(uuid_file, 'r') as f:
+                return json.load(f)['uuid']
+
+        new_uuid = str(uuid.uuid4())
+        with open(uuid_file, 'w') as f:
+            json.dump({'uuid': new_uuid}, f)
+
+        return new_uuid
+
+    def track_event(self, event_name, properties=None):
+        if self.mp:
+            self.mp.track(self.user_id, event_name, properties)