✨ Channel invite friends

lib/models/friendship.dart

@@ -50,4 +50,12 @@ class Friendship {
     "related": related.toJson(),
     "status": status,
   };
+
+  Account getOtherside(int selfId) {
+    if (accountId != selfId) {
+      return account;
+    } else {
+      return related;
+    }
+  }
 }