dev@locazia: implement message_types and clean trash

app/core/content/content_id.py

@@ -17,7 +17,7 @@ class ContentId:
         version: int = None,
         content_hash: bytes = None,  # only SHA256
         onchain_index: int = None,
-        accept_type: str = 'image/jpeg',
+        accept_type: str = None,
         encryption_key_sha256: bytes = None,
     ):
         self.version = version