Custom fields repo into AppState

src/data/entities.rs

@@ -196,12 +196,23 @@ impl CardState {
     }
 }
 
+#[derive(Clone)]
 pub struct CustomField {
     pub id: Id,
     pub name: String,
     pub identifier: String,
 }
 
+impl EntityData for CustomField {
+    fn id(&self) -> Id {
+        self.id
+    }
+
+    fn set_id(&mut self, id: Id) {
+        self.id = id;
+    }
+}
+
 pub struct EntityHandle<E> {
     pub(crate) id: Id,
     index: u32,